snubnosed eel
A deep-sea eel, Simenchelys parasitica, known for its blunt snout and parasitic feeding habits.
The snubnosed eel is a rare fish that lives in the deep sea.
Usually written in katakana; the kanji form 金剛穴子 is rare.
Rare kanji spelling; learners will almost always encounter the katakana form.
The name コンゴウアナゴ combines 金剛 (kongō, 'diamond' or 'vajra', suggesting hardness or strength) with 穴子 (anago, 'conger eel'), but the exact motivation is uncertain.