Possible Compatible Species for Betta splendens
Note: This is a rule based search which makes certain assumptions based on characteristics including size, temperament, temperature and pH. As with all advice, please use common sense before combining any two species.
| Scientific Name | Common Names | Synonyms | Family | |
 | Hypancistrus l-316 | Rio Jari Zebra Pleco | Loricariidae | |
 | Hypancistrus l-270 | Chocolate Zebra Pleco | Possibly l-307, though this is debatable. | Loricariidae |
 | Hypancistrus l-262 | Lda-05, possibly | Loricariidae | |
 | Hypancistrus sp. l-333 | Golden King Tiger Pleco | Loricariidae | |
| Kryptopterus macrocephalus | Peppered glass catfish | Siluridae | ||
| Pseudomugil connieae | Connie's Blue-Eye Popondetta Blue-Eye | Popondetta connieae | Pseudomugilidae | |
| Pseudomugil furcatus | Forktail Blue-Eye Rainbow Forktail Rainbow Furcata Rainbow | Pseudomugilidae | ||
 | Peckoltia sabaji | L075 Leopard pleco Para Pleco | Ancistomus sabaji Hemiancistrus sabaji | Loricariidae |
 | Ancistrus sp. l255 | Spotted Medusa Bristlenose Spotted Medusa Pleco Spotted Pancake Bristlenose | Loricariidae | |
 | Melanotaenia parkinsoni | Parkinson's Rainbowfish | Melanotaeniidae | |
 | Centromochlus perugiae | Honeycomb Tatia Oil woodcatfish | Tatia perugiae Tatia reticularis | Auchenipteridae |
| Glossolepis wanamensis | Lake Wanam Rainbowfish Wanam Rainbowfish | Melanotaeniidae | ||
| Melanotaenia angfa | ANGFA Rainbowfish Yakati Rainbowfish | Melanotaeniidae | ||
| Melanotaenia parva | Lake Kuomai rainbowfish Sunset dwarf rainbowfish | Melanotaeniidae | ||
| Glossolepis dorityi | Dority's rainbowfish zig-zag rainbowfish | Melanotaeniidae | ||
 | Hypancistrus sp. L66 | King Tiger Pleco | Loricariidae | |
 | Mesonoemacheilus triangularis | Batik Loach Zodiac Loach | Balitoridae | |
 | Bunocephalus coracoideus | Banjo Catfish | Aspredinidae | |
 | Epalzeorhynchos frenatum | Rainbow Shark Redfin Shark | Labeo frenatus | Cyprinidae |
 | Puntius sachsi | Gold Barb | Barbus sachsii | Cyprinidae |
 | Trichopsis pumilus | Dwarf Croaking Gourami Pygmy Gourami Sparkling Gourami | Ctenops pumilus | Osphronemidae |
 | Melanotaenia boesemani | Boesemani Rainbowfish Boseman's Rainbowfish | Melanotaeniidae | |
| Iriatherina werneri | Featherfin Rainbowfish Threadfin Rainbowfish | Melanotaeniidae | ||
 | Steatocranus casuarius | African Blockhead Buffalo Head Cichlid Humphead Lionhead Cichlid | Cichlidae | |
 | Hyphessobrycon haraldschultzi | Harold Schultz Tetra | Hemigrammus haraldschultzi | Characidae |
 | Yasuhikotakia morleti | Cream Loach Horae's Loach Mouse Loach Skunk Botia Skunk Loach | Botia horae | Cobitidae |
 | Melanotaenia goldiei | Goldie River Rainbowfish | Aristeus goldiei | Melanotaeniidae |
 | Botia histrionica | Burmese Loach Gold Zebra Loach | Cobitidae | |
| Syncrossus hymenophysa | Banded Loach Green Tiger Botia Tiger Loach Zebra Loach | Cobitis hymenophysa | Cobitidae | |
 | Hemigrammus rodwayi | Gold Tetra Golden Tetra | Hemigrammus armstrongi | Characidae |
 | Puntius everetti | Clown Barb | Barbodes everetti Barbus everetti | Cyprinidae |
 | Geophagus steindachneri | Redhump Eartheater Redhump Geophagus | Geophagus hondae | Cichlidae |
 | Chela caeruleostigmata | Blue Hatchetfish Flying Barb Leaping Barb Siamese Hatchetfish | Laubuca caeruleostigmata | Cyprinidae |
 | Hypancistrus l-174 | Peruvian Panther Pleco Spotted Zebra Pleco | Loricariidae | |
 | Danio nigrofasciatus | Dwarf Danio Spotted Danio | Barilius nigrofasciatus Brachydanio nigrofasciatus | Cyprinidae |
| Melanotaenia gracilis | Slender Rainbowfish | Melanotaeniidae | ||
 | Satanoperca jurupari | Demon Fish Earth Eater | Geophagus jurupari | Cichlidae |
 | Pterophyllum scalare | Angel Fish Angelfish | Platax scalaris Plataxoides dumerilii Pterophyllum altum Pterophyllum dumerilii Pterophyllum eimekei Pterophyllum scalare Zeus scalaris | Cichlidae |
 | Betta splendens | Betta Fighter Siamese Fighting Fish | Osphronemidae | |
 | Trichogaster leerii | Diamond Gourami Lace Gourami Leeri Gourami Mosaic Gourami Pearl Gourami | Trichogaster leeri Trichopus leerii | Osphronemidae |
 | Colisa lalia | Coral Blue Dwarf Gourami Dwarf Gourami Neon Dwarf Gourami Powder Blue Gourami Sunset Dwarf Gourami | Trichogaster lalius Trichopodus lalius | Osphronemidae |
 | Dermogenys pusilla | Malayan Halfbeak Wrestling Halfbeak | Dermogenys burmanicus Dermogenys pusillus Dermogenys siamensis | Hemiramphidae |
 | Metynnis hypsauchen | Silver Dollar Silver Pacu | Myletes hypsauchen | Characidae |
 | Nannostomus beckfordi | Golden Pencilfish | Lebiasinidae | |
 | Hemigrammus erythrozonus | Fire Neon Glo-light Tetra Glowlight Tetra | Characidae | |
 | Moenkhausia pittieri | Diamond Tetra | Characidae | |
 | Hypancistrus zebra | L-046 Zebra Pleco | Loricariidae | |
 | Botia almorhae | Pakistani Loach Yoyo Loach | Botia lohachata | Cobitidae |
 | Epalzeorhynchos kalopterus | Flying Fox | Barbus kalopterus | Cyprinidae |
 | Yasuhikotakia modesta | Blue Botia Orange Fin Loach Red Tailed Botia | Cobitidae | |
 | Glossolepis multisquamatus | Sepik Rainbowfish | Melanotaeniidae | |
 | Laetacara dorsigera | Red breasted acara Red-breasted flag cichlid | Acara dorsiger | Cichlidae |
| Pareutropius buffei | Debauwi catfish Three Striped African Glass Catfish | Eutropiellus buffei Eutropiellus vandeweyeri Eutropius buffei | Schilbeidae | |
 | Microglanis iheringi | Bumblebee Catfish South American Bumblebee Catfish | Pseudopimelodidae | |
| Bagrichthys macracanthus | Black Lancer | Bagroides macracanthus | Bagridae |