They’re detailed as critically endangered, with their numbers declining because of overfishing and habitat destruction. Like coelacanth, they have minimum genetic variation in between populations, generating them much more vulnerable to disease. The ventral fins support butterfly fish stay afloat, when their upturned jaw allows them simply seize small insects https://www.reddit.com/user/custom_aquarium/comments/1hhipgi/why_should_you_buy_a_fish_aquarium_online/