| Debauwi catfish, Three-striped glass catfish., African glass catfish Pareutropius debauwi |  |
| Denisons Flying Fox Puntius denisoni |  |
| Discus Symphysodon aequifasciatus |  |
| Dolly pleco, L183 Ancistrus dolichopterus | |
| Dwarf Cory, Pygmy catfish Corydoras hastatus | |
| Dwarf Gourami Colisa lalia | |
| Dwarf Pleco Peckoltia pulcher | |
| Dwarf Rasbora, Spotted Rasbora Rasbora maculata | |
| Dwarf african mouthbrooder Pseudocrenilabrus nicholsi |  |
| Dwarf livebearer, Mosquito fish Heterandria formosa | |
| Dwarf neon rainbowfish Melanotaenia praecox |  |
| Dwarf pencil fish Nannostomus marginatus |  |
| Dwarf puffer fish Carinotetraodon travancoricus |  |
| Dwarf sucker catfish, Midget suckermouth catfish, Oto Otocinclus affinis | |
| Dermogenys pusillus Half-beak |  |
| Distichodus sexfasciatus Clown tetra | |
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