My tank has got new sharks small-spotted catshark (Scyliorhinus canicula). Sharks are my favourite fish, since they reaylle act and look like the predator they are and they seem to have a bit more personalty than the always hungry cods. Three eggs are waiting to hatch and one has already hatched. The hatched one likes to eat small herring and mysis, so for now it is growing fine.
Here is a photo of a shark embryo waiting to hatch. Its fine brushlike gills are clearly visible and the eyes is very large already.