Aquarium Tank Mates Logo
Aquarium Tank Mates www.aquariumtankmates.com

Image Credits

We are incredibly grateful to the talented photographers who have made their work available under open licenses. Below are the attributions for the images used in our database.

Bicolor Blenny
Bicolor Blenny
Image by Brian Gratwicke, licensed under CC BY 2.0.
Emperor Angelfish
Emperor Angelfish
Image by Francois Libert, licensed under CC BY-SA 2.0.
Rainbow Shiner
Rainbow Shiner
Image by H. Zell, licensed under CC BY-SA 3.0.
Mosquitofish
Mosquitofish
Image by NOZO, licensed under CC BY-SA 3.0.
Green Terror
Green Terror
Image by MidgleyDJ (Dr. David Midgley) at en.wikipedia., licensed under CC BY 2.5.
Jewel Cichlid
Jewel Cichlid
Image by Nicolas COUTHOUIS, licensed under CC BY-SA 2.5.
Black Ghost Knifefish
Black Ghost Knifefish
Image by Photo by and (c)2005 Derek Ramsey (Ram-Man), licensed under CC BY-SA 2.5.
Elephant Nose Fish
Elephant Nose Fish
Image by billycorgan84 (Public domain).
Assassin Snail
Assassin Snail
Image by RSX, licensed under CC BY-SA 3.0.
Bamboo Shrimp
Bamboo Shrimp
Image by Faucon, licensed under CC BY-SA 2.5.
Clown Killifish
Clown Killifish
Image by Dornenwolf, licensed under CC BY 2.0.
Golden Wonder Killifish
Golden Wonder Killifish
Image by Christopher, licensed under CC BY 4.0.
Odessa Barb
Odessa Barb
Image by Mattia Nocciola, licensed under CC BY-SA 4.0.
Melon Barb
Melon Barb
Image by Haplochromis, licensed under CC BY-SA 3.0.
Julii Corydoras
Julii Corydoras
Image by Kai Schreiber, licensed under CC BY-SA 2.0.
Rubber Lip Pleco
Rubber Lip Pleco
Image by 5snake5, licensed under CC0.
Electric Blue Acara
Electric Blue Acara
Image by 5snake5, licensed under CC0.
Texas Cichlid
Texas Cichlid
Image by Charles & Clint, licensed under CC BY-SA 2.0.
Columbian Tetra
Columbian Tetra
Image by Marrabbio2, licensed under CC BY-SA 3.0.
Green Neon Tetra
Green Neon Tetra
Image by Sascha Biedermann, licensed under CC BY-SA 2.5.
Cardinal Tetra
Cardinal Tetra
Image by Ltshears, licensed under CC BY-SA 3.0.
Severum
Severum
Image by moi même, licensed under CC BY 2.5.
Geophagus
Geophagus
Image by Klaus Rudloff, licensed under CC BY-SA 4.0.
Jack Dempsey
Jack Dempsey
Image by User:Zhyla (?), licensed under CC BY-SA 3.0.
Acei Cichlid
Acei Cichlid
Image by Nicolas COUTHOUIS, licensed under CC BY-SA 2.5.
Freshwater Stingray
Freshwater Stingray
Image by Steven G. Johnson, licensed under CC BY-SA 3.0.
Volitan Lionfish
Volitan Lionfish
Image by Lewis Hulbert, licensed under CC BY-SA 4.0.
Blue Gourami
Blue Gourami
Image by Gourami Watcher, licensed under CC BY-SA 3.0.
Gold Gourami
Gold Gourami
Image by Obsidian Soul, licensed under CC0.
Pygmy Corydoras
Pygmy Corydoras
Image by Carnat Joel, licensed under CC BY 2.0.
Silver Dollar
Silver Dollar
Image by Greg Hume, licensed under CC BY-SA 4.0.
Hillstream Loach
Hillstream Loach
Image by Spiketooth, licensed under CC BY-SA 3.0.
Haplochromis (Haps)
Haplochromis (Haps)
Image by The original uploader was MidgleyDJ at English Wikipedia., licensed under CC BY-SA 2.5.
Fathead Minnow
Fathead Minnow
Image by Rankin1958, licensed under CC BY-SA 3.0.
Koi
Koi
Image by H. Zell, licensed under CC BY-SA 3.0.
Ryukin Goldfish
Ryukin Goldfish
Image by Asturio Cantabrio, licensed under CC BY-SA 4.0.
Telescope Goldfish
Telescope Goldfish
Image by James St. John, licensed under CC BY 2.0.
Ranchu Goldfish
Ranchu Goldfish
Image by Lerdsuwa, licensed under CC BY-SA 4.0.
Grouper
Grouper
Image by keesgroenendijk, licensed under CC BY-SA 4.0.
Moray Eel
Moray Eel
Image by Mstroeck at en.wikipedia, licensed under CC BY-SA 3.0.
Purple Dottyback
Purple Dottyback
Image by Rickard Zerpe, licensed under CC BY 2.0.
Neon Tetra
Neon Tetra
Image by Holger Krisp, licensed under CC BY 3.0.
Ember Tetra
Ember Tetra
Image by Klaus Rudloff, licensed under CC BY-SA 4.0.
Harlequin Rasbora
Harlequin Rasbora
Image by NasserHalaweh, licensed under CC BY-SA 4.0.
Betta
Betta
Image by Unknown Photographer, licensed under CC BY-SA 1.0.
Guppy
Guppy
Image by Wibowo Djatmiko, licensed under CC BY-SA 3.0.
Zebra Danio
Zebra Danio
Image by Azul, licensed under Copyrighted free use.
German Blue Ram
German Blue Ram
Image by VivienneHarper, licensed under CC BY-SA 3.0.
Panda Corydoras
Panda Corydoras
Image by Chronotopian, licensed under CC BY-SA 3.0.
Bristlenose Pleco
Bristlenose Pleco
Image by TomiUSM, licensed under CC BY-SA 4.0.
Fancy Goldfish
Fancy Goldfish
Image by IssamBarhoumi, licensed under CC BY-SA 4.0.
Rummy Nose Tetra
Rummy Nose Tetra
Image by Bernat Arlandis, licensed under CC BY-SA 2.0.
Congo Tetra
Congo Tetra
Image by Frank M. Greco, licensed under CC BY 3.0.
Pearl Gourami
Pearl Gourami
Image by BEDO (Thailand), licensed under CC BY-SA 4.0.
Swordtail
Swordtail
Image by Wojciech J. Płuciennik, licensed under CC BY-SA 4.0.
Cockatoo Dwarf Cichlid
Cockatoo Dwarf Cichlid
Image by Redspider, licensed under CC BY-SA 3.0.
Angelfish
Angelfish
Image by Ldehaen, licensed under CC BY-SA 3.0.
Otocinclus Catfish
Otocinclus Catfish
Image by Pjotrx at Dutch Wikipedia, licensed under CC BY-SA 3.0.
Kuhli Loach
Kuhli Loach
Image by User:Louie, licensed under CC BY-SA 3.0.
Cherry Barb
Cherry Barb
Image by Unknown Photographer, licensed under CC BY-SA 3.0.
White Cloud Mountain Minnow
White Cloud Mountain Minnow
Image by Ethmostigmus, licensed under CC BY-SA 4.0.
Black Skirt Tetra
Black Skirt Tetra
Image by emptyvi, licensed under CC BY-SA 3.0.
Dwarf Gourami
Dwarf Gourami
Image by André Karwath aka Aka, licensed under CC BY-SA 2.5.
Platy
Platy
Image by vxixiv, licensed under CC BY 2.0.
Oscar
Oscar
Image by Jón Helgi Jónsson (Amything), licensed under CC BY-SA 3.0.
Sterbai Corydoras
Sterbai Corydoras
Image by Unknown Photographer, licensed under CC BY 2.5.
Clown Loach
Clown Loach
Image by Vlad Butsky from San Jose, CA, USA, licensed under CC BY 2.0.
Tiger Barb
Tiger Barb
Image by Malene Thyssen (User Malene), licensed under CC BY-SA 3.0.
Silver Arowana
Silver Arowana
Image by Vaikoovery, licensed under CC BY 3.0.
Peacock Gudgeon
Peacock Gudgeon
Image by Haleybean, licensed under CC BY 3.0.
Yellow Tang
Yellow Tang
Image by Unknown Photographer, licensed under CC BY-SA 3.0.
Serpae Tetra
Serpae Tetra
Image by Dubrovsky Alexander (Aledubr) (Public domain).
Glowlight Tetra
Glowlight Tetra
Image by GOGO, licensed under CC BY-SA 3.0.
Lemon Tetra
Lemon Tetra
Image by Waugsberg, licensed under CC BY 2.5.
Black Neon Tetra
Black Neon Tetra
Image by Luki86, licensed under CC BY-SA 4.0.
Bloodfin Tetra
Bloodfin Tetra
Image by Hemigrammus at German Wikipedia, licensed under CC BY-SA 3.0.
Emperor Tetra
Emperor Tetra
Image by Sitron, licensed under CC BY-SA 3.0.
Diamond Tetra
Diamond Tetra
Image by Unknown Photographer, licensed under CC BY-SA 2.5.
Bleeding Heart Tetra
Bleeding Heart Tetra
Image by H. Zell, licensed under CC BY-SA 3.0.
Buenos Aires Tetra
Buenos Aires Tetra
Image by Nick Sc., licensed under CC BY-SA 3.0.
Chili Rasbora
Chili Rasbora
Image by Atulbhats, licensed under CC BY-SA 4.0.
Galaxy Rasbora (CPD)
Galaxy Rasbora (CPD)
Image by Cisamarc, licensed under CC BY-SA 3.0.
Lambchop Rasbora
Lambchop Rasbora
Image by Lerdsuwa, licensed under CC BY-SA 3.0.
Giant Danio
Giant Danio
Image by Unknown Photographer, licensed under CC BY-SA 2.5.
Honey Gourami
Honey Gourami
Image by Made be Uploader, licensed under CC BY-SA 3.0.
Moonlight Gourami
Moonlight Gourami
Image by H. Zell, licensed under CC BY-SA 3.0.
Molly
Molly
Image by Hugo Torres, licensed under CC BY 2.5 es.
Bolivian Ram
Bolivian Ram
Image by Pia Helminen, licensed under CC BY 2.5.
Discus
Discus
Image by Discus at Dutch Wikipedia, licensed under CC BY-SA 3.0.
Electric Yellow Cichlid
Electric Yellow Cichlid
Image by The original uploader was Marrabbio2 at Italian Wikipedia., licensed under CC BY-SA 3.0.
Common Pleco
Common Pleco
Image by Jean-Etienne Minh-Duy Poirrier, licensed under CC BY-SA 2.0.
Boeseman's Rainbowfish
Boeseman's Rainbowfish
Image by Atamari, licensed under CC BY-SA 3.0.
Royal Gramma
Royal Gramma
Image by Brian Gratwicke, licensed under CC BY 2.0.
Blue Hippo Tang
Blue Hippo Tang
Image by Silvio Tanaka, licensed under CC BY 2.0.
Mandarin Dragonet
Mandarin Dragonet
Image by Gdiggers, licensed under CC BY-SA 3.0.
Flame Angelfish
Flame Angelfish
Image by No machine-readable author provided. Normann Z assumed (based on copyright claims). (Public domain).
Endler's Livebearer
Endler's Livebearer
Image by Dgrummon, licensed under CC BY-SA 4.0.
Keyhole Cichlid
Keyhole Cichlid
Image by Bartosz Senderek, licensed under CC BY-SA 2.5.
Peacock Cichlid
Peacock Cichlid
Image by Klaus Rudloff, licensed under CC BY-SA 4.0.
Convict Cichlid
Convict Cichlid
Image by S. Olkowicz - User Hippocampus on pl.wikipedia, licensed under CC BY 2.5.
Emerald Catfish
Emerald Catfish
Image by Maschinenkanone at German Wikipedia, licensed under CC BY-SA 2.0 de.
Royal Pleco
Royal Pleco
Image by Neale Monks, licensed under CC BY-SA 3.0.
Yoyo Loach
Yoyo Loach
Image by Lukáš Mižoch, licensed under CC BY-SA 2.5.
Zebra Loach
Zebra Loach
Image by Lerdsuwa, licensed under CC BY-SA 3.0.
Pictus Catfish
Pictus Catfish
Image by Claire H., licensed under CC BY-SA 2.0.
Featherfin Squeaker
Featherfin Squeaker
Image by Gourami Watcher, licensed under CC BY-SA 3.0.
Rosy Barb
Rosy Barb
Image by Usien, licensed under CC0.
Tinfoil Barb
Tinfoil Barb
Image by Photo by and (c)2004 Derek Ramsey (Ram-Man), licensed under CC BY-SA 2.5.
Denison Barb
Denison Barb
Image by Vengolis, licensed under CC BY 4.0.
Blue Panchax
Blue Panchax
Image by Sahat Ratmuangkhwang, licensed under CC BY 3.0.
Gardner's Killifish
Gardner's Killifish
Image by Alexander Prokoshev, licensed under CC BY-SA 4.0.
African Butterfly Fish
African Butterfly Fish
Image by Toniher, licensed under CC BY-SA 3.0.
Rope Fish
Rope Fish
Image by Daiju Azuma, licensed under CC BY-SA 2.5.
Scarlet Badis
Scarlet Badis
Image by ATuin-hek at English Wikipedia, licensed under CC0.
Turquoise Rainbowfish
Turquoise Rainbowfish
Image by Klaus Rudloff, licensed under CC BY-SA 4.0.
Threadfin Rainbowfish
Threadfin Rainbowfish
Image by NRJMelvinT, licensed under CC BY-SA 4.0.
Common Goldfish
Common Goldfish
Image by James St. John, licensed under CC BY 2.0.
Shubunkin
Shubunkin
Image by Michelle Jo, licensed under CC BY-SA 3.0.
Comet Goldfish
Comet Goldfish
Image by Oldhag (Public domain).
Oranda Goldfish
Oranda Goldfish
Image by Benson Kua from Toronto, Canada, licensed under CC BY-SA 2.0.
Weather Loach
Weather Loach
Image by Unknown Photographer (Public domain).
Rosy Red Minnow
Rosy Red Minnow
Image by Unknown Photographer (Public domain).
Bitterling
Bitterling
Image by Viridiflavus, licensed under CC BY-SA 3.0.
Paradise Fish
Paradise Fish
Image by André Karwath aka Aka, licensed under CC BY-SA 2.5.
True Percula Clownfish
True Percula Clownfish
Image by ZooFari (Public domain).
Orchid Dottyback
Orchid Dottyback
Image by Cangadoba, licensed under CC BY-SA 4.0.
Blue-Green Chromis
Blue-Green Chromis
Image by User Elapied on French Wikipedia, licensed under CC BY-SA 2.0 fr.
Sailfin Tang
Sailfin Tang
Image by Pascal Carré, licensed under CC BY-SA 3.0.
Koran Angelfish
Koran Angelfish
Image by Jobin (Public domain).
Regal Angelfish
Regal Angelfish
Image by eNil from Portsmouth, UK, licensed under CC BY 2.0.
Six Line Wrasse
Six Line Wrasse
Image by Unknown Photographer (Public domain).
Bluestreak Cleaner Wrasse
Bluestreak Cleaner Wrasse
Image by Rickard Zerpe, licensed under CC BY 2.0.
Leopard Wrasse
Leopard Wrasse
Image by Unknown Photographer (Public domain).
Firefish Goby
Firefish Goby
Image by Jenny (JennyHuang) from Taipei, licensed under CC BY 2.0.
Purple Firefish
Purple Firefish
Image by TANAKA Juuyoh, licensed under CC BY 2.0.
Watchman Goby
Watchman Goby
Image by Sitron, licensed under CC BY-SA 3.0.
Clown Goby
Clown Goby
Image by Rickard Zerpe, licensed under CC BY 2.0.
Pajama Cardinalfish
Pajama Cardinalfish
Image by Bjoertvedt, licensed under CC BY-SA 3.0.
Banggai Cardinalfish
Banggai Cardinalfish
Image by Unknown Photographer, licensed under CC BY-SA 1.0.
Flame Hawkfish
Flame Hawkfish
Image by Brian Gratwicke, licensed under CC BY 2.0.
Dwarf Lionfish
Dwarf Lionfish
Image by Unknown Photographer, licensed under CC BY-SA 2.5.
Humu Picasso Triggerfish
Humu Picasso Triggerfish
Image by Original uploader was Elapied at fr.wikipedia, licensed under CC BY-SA 2.0 fr.
Valentini Puffer
Valentini Puffer
Image by User:Haplochromis, licensed under CC BY-SA 3.0.
Copperband Butterflyfish
Copperband Butterflyfish
Image by Esquilo, licensed under CC BY-SA 3.0.
Chalk Basslet
Chalk Basslet
Image by coralreefdreams, licensed under CC BY 4.0.
Neon Dottyback
Neon Dottyback
Image by Haplochromis, licensed under CC BY-SA 3.0.
Moorish Idol
Moorish Idol
Image by Leonard Low from Australia, licensed under CC BY 2.0.
Foxface Rabbitfish
Foxface Rabbitfish
Image by Manuel M., licensed under CC BY 4.0.
Cherry Shrimp
Cherry Shrimp
Image by DirkBlankenhaus, licensed under CC BY-SA 3.0.
Pea Puffer
Pea Puffer
Image by Till Kresslein, licensed under CC BY-SA 3.0.
Siamese Algae Eater
Siamese Algae Eater
Image by User:Ark pl wiki, licensed under CC BY 3.0.
Kribensis
Kribensis
Image by André Karwath aka Aka, licensed under CC BY-SA 2.5.
Lawnmower Blenny
Lawnmower Blenny
Image by Rainer Kretzberg, licensed under CC BY 3.0.
Amano Shrimp
Amano Shrimp
Image by Seotaro, licensed under CC BY-SA 3.0.
Marbled Hatchetfish
Marbled Hatchetfish
Image by The original uploader was Dawson at English Wikipedia., licensed under CC BY-SA 2.5.
Blood Parrot Cichlid
Blood Parrot Cichlid
Image by LIS ARISH, licensed under CC BY 4.0.
Peppermint Shrimp
Peppermint Shrimp
Image by Miguelverdu, licensed under CC BY-SA 3.0.
Glass Catfish
Glass Catfish
Image by -serwacy01-, licensed under CC BY-SA 4.0.
Nerite Snail
Nerite Snail
Image by TakisA1, licensed under CC BY-SA 4.0.
Mystery Snail
Mystery Snail
Image by BrittanyU, licensed under CC BY-SA 4.0.
Firemouth Cichlid
Firemouth Cichlid
Image by The original uploader was Tomolyka at Hungarian Wikipedia., licensed under CC BY-SA 3.0.
Yellowtail Damselfish
Yellowtail Damselfish
Image by Paul Asman and Jill Lenoble, licensed under CC BY 2.0.
Skunk Cleaner Shrimp
Skunk Cleaner Shrimp
Image by No machine-readable author provided. Haplochromis assumed (based on copyright claims). (Public domain).
Blue Leg Hermit Crab
Blue Leg Hermit Crab
Image by Nat Tarbox, licensed under CC BY 2.0.
Bicolor Dottyback
Bicolor Dottyback
Image by Jenny (JennyHuang) from Taipei, licensed under CC BY 2.0.
Albino Corydoras
Albino Corydoras
Image by Gabriel Resende Veiga, licensed under CC BY-SA 4.0.
Peppered Corydoras
Peppered Corydoras
Image by NiKo at German Wikipedia, licensed under Public domain.
Zebra Pleco
Zebra Pleco
Image by Peaceinpianos, licensed under CC BY-SA 4.0.
Clown Pleco
Clown Pleco
Image by Jarne Colman, licensed under CC0.
Gold Nugget Pleco
Gold Nugget Pleco
Image by Anne Blindheim, licensed under CC BY-SA 3.0.
Vampire Pleco
Vampire Pleco
Image by Original uploader was Fcbaum (Frank-Christian Baum) at de.wikipedia, licensed under CC BY-SA 3.0.
Sailfin Molly
Sailfin Molly
Image by Unknown Author, licensed under Public domain.
Dalmatian Molly
Dalmatian Molly
Image by http://tropicalfishandaquariums.com, licensed under CC0.
Silvertip Tetra
Silvertip Tetra
Image by Malene Thyssen (User Malene), licensed under CC BY-SA 3.0.
Penguin Tetra
Penguin Tetra
Image by Juan R. Lascorz, licensed under CC BY-SA 3.0.
Pristella Tetra
Pristella Tetra
Image by Debivort, licensed under CC BY-SA 3.0.
Blind Cave Tetra
Blind Cave Tetra
Image by Seb Morič, licensed under CC BY-SA 4.0.
Flame Tetra
Flame Tetra
Image by Mosasaurus, licensed under Public domain.
Rosy Tetra
Rosy Tetra
Image by Aquakeeper14, licensed under CC BY-SA 3.0.
Black Phantom Tetra
Black Phantom Tetra
Image by R.workoran, licensed under CC BY-SA 4.0.
Red Phantom Tetra
Red Phantom Tetra
Image by Tsunamicarlos at English Wikipedia, licensed under Public domain.
Scissortail Rasbora
Scissortail Rasbora
Image by Lerdsuwa, licensed under CC BY-SA 3.0.
Emerald Dwarf Rasbora
Emerald Dwarf Rasbora
Image by Cantospira, licensed under CC BY-SA 4.0.
Gold Barb
Gold Barb
Image by Gürkan Sengün, licensed under GFDL.
Sparkling Gourami
Sparkling Gourami
Image by BEDO (Thailand), licensed under CC BY-SA 4.0.
Chocolate Gourami
Chocolate Gourami
Image by en:User:Tsunamicarlos, licensed under Public domain.
Kissing Gourami
Kissing Gourami
Image by 5snake5, licensed under CC BY-SA 4.0.
Giant Gourami
Giant Gourami
Image by George Chernilevsky, licensed under Public domain.
Frontosa
Frontosa
Image by H. Zell, licensed under CC BY-SA 3.0.
Demasoni Cichlid
Demasoni Cichlid
Image by lee Nachtigal, licensed under CC BY 2.0.
Auratus Cichlid
Auratus Cichlid
Image by Vlad Butsky from San Jose, CA, USA, licensed under CC BY 2.0.
Flowerhorn
Flowerhorn
Image by Lerdsuwa, licensed under CC BY-SA 3.0.
Rainbow Cichlid
Rainbow Cichlid
Image by Klaus Rudloff, licensed under CC BY-SA 4.0.
Apistogramma agassizii
Apistogramma agassizii
Image by Guérin Nicolas (messages), licensed under CC BY-SA 3.0.
Fairy Cichlid
Fairy Cichlid
Image by Przemysław Malkowski, licensed under CC BY-SA 3.0.
Duckweed
Duckweed
Image by Unknown Author, licensed under CC BY-SA 3.0.
Hornwort
Hornwort
Image by chiuluan, licensed under CC BY 4.0.
Jungle Val
Jungle Val
Image by Lamiot, licensed under CC BY-SA 4.0.
Amazon Sword
Amazon Sword
Image by Salvatore vitale, licensed under Public domain.
Anubias
Anubias
Image by en:User:Tsunamicarlos, licensed under Public domain.
Java Fern
Java Fern
Image by Unknown Author, licensed under CC BY-SA 3.0.
Water Lettuce
Water Lettuce
Image by Σ64, licensed under CC BY 3.0.
Amazon Frogbit
Amazon Frogbit
Image by FrozenAvatar, licensed under CC BY-SA 4.0.
Java Moss
Java Moss
Image by Unknown Author, licensed under CC BY-SA 3.0.
Water Wisteria
Water Wisteria
Image by Krzysztof Ziarnek, Kenraiz, licensed under CC BY-SA 4.0.
Cryptocoryne Wendtii
Cryptocoryne Wendtii
Image by Tommy Kronkvist, licensed under CC BY 3.0.
Anacharis
Anacharis
Image by Frank Vincentz, licensed under CC BY-SA 3.0.
Red Root Floater
Red Root Floater
Image by Monarchatto, licensed under CC BY-SA 4.0.
Salvinia
Salvinia
Image by mmmavocado, licensed under CC BY 2.0.
Dwarf Hairgrass
Dwarf Hairgrass
Image by Robert H. Mohlenbrock, licensed under Public domain.
Rotala
Rotala
Image by Franz Xaver, licensed under CC BY-SA 4.0.
Ludwigia
Ludwigia
Image by Krzysztof Ziarnek, Kenraiz, licensed under CC BY-SA 4.0.
Bucephalandra
Bucephalandra
Image by Krzysztof Ziarnek, Kenraiz, licensed under CC BY-SA 4.0.
Guppy Grass
Guppy Grass
Image by Timothy McNitt https://www.inaturalist.org/people/frondsinhighplaces, licensed under CC BY 4.0.
Marimo Moss Ball
Marimo Moss Ball
Image by bryan... from Taipei, Taiwan, licensed under CC BY-SA 2.0.