Species
58 species| Photo | English | සිංහල | தமிழ் | Scientific name | IUCN | Endemic |
|---|---|---|---|---|---|---|
| Dumbara Corrugated Frog | දුම්බර රැළි ගෙම්බා | தும்பறை மடிப்புத் தவளை | Lankanectes pera | CR | Endemic | |
| Duméril’s Kukri Snake | ඩූමරිල්ගේ දත්කැටියා | தும்மெரில் ஓலைப்பாம்பு | Oligodon sublineatus | VU | Endemic | |
| Dunlin | — | — | Calidris alpina | NT | — | |
| Dusky Palm Squirrel | පුංචි ලේනා | கருமையான பனை அணில் | Funambulus obscurus | VU | Endemic | |
| Dusky Spreadwing | අඳුරු ඉදිකටු මැස්සා | கருமை பரவுசிறகு ஊசித்தும்பி | Lestes concinnus | LC | — | |
| Dusky Surgeonfish | අඳුරු සැත්කම් මාළුවා | இருண்ட அறுவைமீன் | Acanthurus nigrofuscus | LC | — | |
| Duskytail Grouper | — | — | Epinephelus bleekeri | DD | — | |
| Dussumier’s Ponyfish | ඩුසුමියර් කරල්ලා | — | Karalla dussumieri | LC | — | |
| Dussumier’s Rockskipper | — | — | Istiblennius dussumieri | LC | — | |
| Dwarf Panchax | — | — | Aplocheilus parvus | LC | — |
