Possible Compatible Species for Astronotus ocellatus
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 | |
| Serrasalmus rhombeus | Black Piranha Niger Piranha Rhom Piranha White Piranha | Serralamus niger | Characidae | |
| Archocentrus spinosissimus | Spiney Cichlid Spinner Cichlid Spinos Cichlid | Cichlasoma immaculata Cichlasoma spinosissimum immaculata Cichlasoma spinosissimus Heros spinosissimus | Cichlidae | |
 | Petenia splendida | Red Bay Snook Red Snook | Cichlidae | |
 | Hemichromis lifalili | Blood Red Jewel | Cichlidae | |
 | Epalzeorhynchos bicolor | Red Tailed Black Shark Redtail Shark | Labeo bicolor | Cyprinidae |
| Leporacanthicus joselimai | Leopard Leporacanthicus Sultan Pleco | Loricariidae | ||
| Tetraodon mbu | Giant Puffer Mbu Puffer | Tetrodon mbu | Tetraodontidae | |
 | Epalzeorhynchos frenatum | Rainbow Shark Redfin Shark | Labeo frenatus | Cyprinidae |
| Tetraodon suvatii | Arrowhead Puffer Hognose Puffer Mekong Puffer Pignose Puffer | Monotrette suvatii | Tetraodontidae | |
 | Thorichthys helleri | Heller's Cichlid | Astronotus helleri Cichlasoma champotone Cichlasoma champotonis Cichlasoma helleri Herichthys helleri Heros helleri | Cichlidae |
 | Scleropages jardinii | Australian Pearl Arowana Gulf Saratoga Jardini Northen Saratoga Northern Spotted Barramundi Saratoga | Osteoglossidae | |
| Ctenolucius hujeta | Freshwater Barracuda Gar Characin Hujeta Pike Characin Rocket Gar | Ctenolucius hujeta hujeta Hydrocynus hujeta Luciocharax hujeta Xiphostoma hujeta | Ctenoluciidae | |
 | Leptobarbus hoevenii | Cigar Shark Mad Barb | Barbus hoevenii | Cyprinidae |
 | Tetraodon lineatus | Fahaka Puffer Globe Fish Nile Puffer | Tetraodon fahaka Tetraodon lineatus lineatus Tetrodon strigosus | Tetraodontidae |
 | Astronotus ocellatus | Oscar | Lobotes ocellatus | Cichlidae |
 | Amphilophus citrinellus | Midas Cichlid | Amphilophus citrinellum Archocentrus citrinellus Cichlasoma citrinella Cichlasoma citrinellum Herichthys citrinellus Heros citrinellus | Cichlidae |
 | Labeo chrysophekadion | Black Labeo Black Shark Black Sharkminnow | Morulius chrysophekadion Rohita chrysophekadion | Cyprinidae |
 | Thorichthys meeki | Firemouth Cichlid | Cichlasoma hyorhynchum Cichlasoma meeki Herichthys meeki Heros meeki Thorichthys helleri meeki Thorichthys meeki | Cichlidae |
 | Altolamprologus compressiceps | Compressed Cichlid | Lamprologus compressiceps Neolamprologus compressiceps | Cichlidae |
| Abramites hypselonotus | High-Backed Headstander Marbled Headstander | Abramites microcephalus Abramites ternetzi Leporinus nigripinnis Leporinus solarii | Anostomidae |