these are the gills of a slow-going rather than an active fish. The scales are hard, woven tight as armor, and rough to the touch. The roughness comes from tiny, tooth-like spikes called denticles ...

They have gills that allow them to breathe underwater. Surprisingly most fish lay eggs. Not hard like a chicken, but soft and lots of them. Fish all have scales, even when they're newborn and tiny.

To scale a fish, with the back of a knife scrap along ... Step 1: Cut off the head behind the gills. If you don't mind being stared at you can leave the head on if you wish to.

tooth-like scales that differ from the scales of bony fish. And they have five, six, or seven gill slits per side, not one per side as in bony fish. Some sharks lay egg cases with developing ...

Gills and mammalian ears bear little resemblance ... did in a tour-de-force comparative genomic study that included a fish, an amphibian, a reptile, a mammal and even a horseshoe crab (Limulus ...

"Cleaning" a fish involves disposing of the gills, blood, and guts, along with the animal's skin and scales. Descaling is not absolutely necessary, and many cuisines the world over serve fish ...