Fish Vocabulary Crossword

Gills; some have specialized lungs or other adaptations that enable the to obtain oxygen from the air.
Diffusion across Gill membranes; kidneys
Lacking true bone, their skeletons are built entirely of cartilage.
Used to stabilize the animal against rolling and to assist in sudden turns.
Light produced by living organisms
An animal whose body temperature is determined by its surroundings.
An animal able to generate its own body heat and maintain consistent temperature regardless of the surroundings
A super class of species. The common features are : jaws and paired fins are generally absent. Usually, the skeleton is cartilaginous, embryonic notochord persists in adults, +7 paired gill pouches are present
The control of water concentration in the body.
the young develop in eggs and nourished by yolk, but eggs are kept in the womb.
A small opening behind the eye to bring respiratory current to the gills.
The periodic/seasonal movement of groups of animals from one region to another for feeding and/or breeding
Species that live in many places around the world rather than a very specific and restricted area.
Electromagnetic receptors on sharks, primitive fish, and some teleosts. It appears as pores, but the ampullae are tubes filled with gelatinous material that lead electroreceptors at their base