Vocabulary
When fins are removed before and cut off while the shark is still alive for commercial trading
What is shark finning?
Compared to human's 4 chambered heart, fishes have a ____ chambered heart
What is 2
The gas-filled sac just above the stomach and intestine that allows bony fish to stay buoyant
What is the swim bladder
Opposed to rays, skates do not have these
What is whip like tail
This type of reproduction involves caring for eggs in pouch or mouth.
What is bearer?
Small rough scales that make up the skin of cartilaginous fishes
What is placoid scales
The part of the fish that absorbs oxygen from water and releases carbon dioxide. Also aids in salt balance.
What is gills?
Type of caudal fin where both upper and lower lobes are the same length
What is Homoceral
Type of caudal fin where the upper lobe is longer than the lower lobe
What is Heteroceral?
This type of reproduction involves placing eggs in hidden location like rocks, coral or sand.
What is brood hider?
A type of coloring that allows fish to blend in with the environment to deceive predators or prey
What is cryptic coloring?
This type of paired fin is used to stabilize fish. Larger in sharks to help with lift.
What are pectoral fins?
The most common type of reproduction, where sperm and egg is released into the water
What is external fertilization or broadcast spawing?
This difference in sharks and rays, has to do with breathing.
What gills underneath?
This type of reproductive strategy involves eggs that sink and develop on the bottom.
What is benthic spawners?
Thin, flexible, overlapping scales often covered with a thin layer of skin/mucus
What are Cycloid scales?
To maximize efficiency of oxygen when water is passed over the gills it passes over in the ____________ direction
What is opposite
Most bony fish reproduce externally releasing sperm and egg into the water.
What is oviporous?
Extra sense that allows this type of fish to detect minute electric current
What is ampullae of lorenzini
Type of reproduction where the young are born live
What is viviparous?
This body shape allows for active swimming.
What is fusiform?
The gives sharks and other fish forward motion?
What is caudal fin (tail fin)?
A series of pores and canals lined with cells (neuromasts) that are specialized to detect vibrations and indicate presence of predator/prey
What is the lateral line system?
This cartilaginous fish has a venomous spine at the front of its dorsal fin.
What is ratfish?
Type of reproduction where eggs are kept inside and hatch before being released from the uterus
What is Ovoviviparious?