| Name | Aquarists | Category | Region | Description |
|---|---|---|---|---|
| Xystichromis cf. nuchisquamulatus CARES | 3 | Cichlids | Africa | An endemic cichlid native to Lake Victoria |
| Xystichromis sp. 'kyoga flameback' CARES | 1 | Cichlids | Africa | |
| Yssichromis perrieri CARES | 3 | Cichlids | Africa | An endangered cichlid species native to Lake Victoria. |
| Yssichromis piceatus CARES | 3 | Cichlids | Africa | Endangered cichlid endemic to Lake Victoria. Dominant males develop an … |
| Yssichromis thereuterion CARES | 1 | Cichlids | Africa | A non-aggressive open water Victoria haplochromine that will hide in … |
| Zoogoneticus tequila CARES | 3 | Livebearers | North America |