Possible Compatible Species for Heterandria formosa
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 | |
| Xiphophorus montezumae | Mexican Swordtail Montezuma Swordtail | Poeciliidae | ||
| Xiphophorus multilineatus | Pigmy Sword Tail | Poeciliidae | ||
| Xiphophorus nezahualcoyotl | Montezuma Swordtail Nezzy Swordtail Spotted Swordtail | Xiphophorus montezumae | Poeciliidae | |
 | Heterandria formosa | Formosa Livebearer Least Killifish | Poeciliidae | |
| Phalloceros caudimaculatus | Dusky Millions Fish | Girardinus caudimaculatus Phalloceros caudomaculatus | Poeciliidae | |
 | Bedotia geayi | Madagascar Rainbowfish Red Tailed Silverside Zona | Bedotia longianalis Bedotia tricolor | Bedotiidae |
| Sawbwa resplendens | Asian Rummynose Naked Microrasbora Rummynose Rasbora Sawbwa Barb | Cyprindae |