Fish living with parasite mate documented for the first time
In a first, a live female anglerfish with its parasitic mate permanently attached to the belly has been observed in the North Atlantic Ocean. In the most extreme cases, females are over 60 times the length and about a half-a-million times as heavy as males, noted researchers. The pair was recorded by Kirsten and Joachim Jakobsen from the Rebikoff-Niggeler Foundation.