Danio rerio (zebrafish) gill branches (46.7x) (2000 - James E. Hayden, RBP, FBCA)
Danio rerio (zebrafish) gill branches (46.7x) (2000 - James E. Hayden, RBP, FBCA)
This is the source, not my original picture. But this is a Barreleye fish (Macropinna microstoma). His head is transparent and the eyes are inside the transparent part so he can look straight up.
submission from nuclear-noelle
Knee-deep wading is bliss for camels in Chad’s Archeï oasis, a canyon whose trapped waters hold a zoological surprise. Fertilized by beasts’ droppings, algae are eaten by fish that are preyed upon by an isolated group of crocodiles.
A school of juvenile marine catfish masses over the sandy bottom of Suruga Bay off Japan’s Izu Peninsula.
from national geographic:
Smaller fish keep their distance when a blacktip reef shark swims amongst them in shallow water in the Maldives.
from wikipedia:
Marine fish can produce high numbers of eggs which are often released into the open water column, the eggs have an average diameter of 1mm. This fish egg was collected in Tasmanian Waters.
from national geographic:
The clownish grin of a bridled parrotfish reveals its power tools: grinding teeth used to scrape algae from rock. Though sometimes destructive to individual corals, the fish’s efforts are mostly beneficial. Without them, algal growth could smother the reef.
All clownfish are born male. When they become adults, the largest, most dominant fish becomes a female, and the second largest becomes the breeding male. If the breeding female disappears, the breeding male (now the largest of the group) will become a female, and so on. In other species of tropical fish, when the ratio between males and females becomes imbalanced, dominant females may become males.
the leafy sea dragon is a fish closely related to the sea horse. its main defense mechanism is pretending to be a floating bunch of sea weed. it swims very slowly and its dorsal and pectoral fins (which do all the swimming), are transparent. it is found in the southern and western coasts of Australia.