Holothuria (Microthele) whitmaei, commonly known as the black teatfish, is a species of sea cucumber in the family Holothuriidae.

The sea cucumber is distributed in the western Indian and Pacific oceans, with specimens being found off of Tanzania,[2] New Caledonia and the Philippines.

Macroscopic and histological analysis revealed “that large germinal tubules, positioned centrally on the gonad basis, progressed through four maturity stages: growing (II); mature (III); partly spawned (IV); and spent (V)”.

“Diurnal studies of 30 black teat fish on the Ningaloo Reef...found that the proportion of animals sheltered (and therefore hidden when viewed from directly above) was significantly greater in the morning...relative to the afternoon”.

H. whitmaei are "among the highest value species and well-dried ‘A’ grade product may command a price of $US 70–190 per kg depending on size and quality".