Sperm drinking is observed in:

Correct option is B

→ Bronze corydoras catfish exhibit “sperm drinking,” where females take sperm into their mouths for internal fertilization of eggs before depositing them.
→ This unique reproductive behavior ensures controlled fertilization and protection of gametes.
→ Observed widely in Corydoras species.
Information Booster:
→ Female holds eggs between pelvic fins before sticking them on substrates.
→ Sperm drinking increases fertilization success in turbid waters.
→ Rare reproductive strategy among freshwater fishes.
Additional Information (Other Options):
(a) Bitterling: Deposits eggs in mussels.
(c) Seahorses: Male pregnancy; no sperm drinking.
(d) Pipefish: Similar to seahorses; males brood eggs.