| Temmincks bristlenose, Bristlenose catfish Ancistrus temmincki | .jpg) |
| Threadfin rainbowfish Iriatherina werneri |  |
| Three-striped glass catfish., Debauwi catfish, African glass catfish Pareutropius debauwi |  |
| Tiger Barb Puntius tetrazona | |
| Tiger shovelnose catfish Pseudoplatystoma fasciatum |  |
| Tricolor Shark, Tricolor sharkminnow, Bala shark, Silver shark Balantiocheilos melanopterus |  |
| Twig catfish Farlowella acus | |
| Tanichthys albonubes White Cloud Mountain Minnow | |
| Tateurndina ocellicauda Peacock goby, Rainbow gudgeon | |
| Telmatherina ladigesi Celebes rainbowfish | |
| Tetraodon mbu Giant fresh water puffer |  |
| Thorichthys ellioti |  |
| Tilapia joka |  |
| Trichogaster leeri Pearl gourami |  |
| Trichogaster microlepis Moonlight gourami |  |
| Trichogaster trichopterus Blue gourami | |
| Trichopsis vittata Croaking gourami |  |
Too many fish? Overstocked tanks stress the fish in many ways: competition for food and space, bullying from other fish, deterioration of water quality and increased concentration of disease vectors. A lightly stocked tank will always be easier to care for, with more stable water quality