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
The 3 types of marine fishes
What is bony, jawless, and cartilaginous
Small rough scales that make up the skin of cartilaginous fishes
What is placoid scales
What is a Spiral Valve?
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?
Solutes and gasses diffuse from ______ to ________ concentrations
What is High to Low
A type of coloring that allows fish to blend in with the environment to deceive predators or prey
What is cryptic coloring?
The intestine, pyloric caeca, pancreas, and liver do this to help digest food
What is secrete digestive enzymes
The most common type of reproduction, where sperm is released into the water
What is broadcast spawning?
The toxic compound that results from the breakdown of proteins - retained by the kidneys and helps in osmoregulation
What is urea?
The intestine of this type of fish is long and coiled
What is herbivorous?
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 lamellae it passes over in the ____________ direction
What is opposite
The bony fish that is thought to be the first four-legged vertebrate connecting land and marine species
What is Tiktaalik
Evolutionary modified neuromasts that can detect minute electric potentials
What is ampullae of lorenzini
Type of reproduction where the young are born live
What is viviparous?
A type of migration where species live in seawater but migrate to freshwater to reproduce
What is Anadromous?
The thin, tough layer of skin that covers the eye of sharks when feeding is known as this
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?
A color pattern with a dark back (dorsal) and light belly (ventral) that allows animals to blend bin when looking from the side
What is countershading
Type of reproduction where eggs are kept inside and hatch before being released from the uterus
What is Ovoviviparious?