This main kind of fish makes up almost all the fishes in the sea.
What are bony fishes?
100
This part of the fish is used for breathing.
What are gills?
100
This process is the most common way that fishes reproduce.
What is spawning?
100
This is the earliest stage of most fish.
What is the egg stage?
100
This form of defense make it hard for a predator to see a fish.
What is camouflage?
200
The flounder has this shape, but it doesn't mean that the flounder is always sad.
What is a depressed shape?
200
This swimming equipment was given to fishes by God to help them swim. It is part of what makes a fish a fish.
What are fins?
200
This substance is released by male fish on the eggs laid by females.
What is sperm?
200
Fish eggs turn into these, which float about with the current.
What is larva or larvae?
200
Many fish swim in these large groups, which causes safety in number.
What are schools?
300
God gave this special part to fishes to keep them afloat in the water.
What is the swim bladder?
300
This is another name for the tail fin of a fish.
What is the caudal fin?
300
This happens to eggs that have come in contact with sperm.
What is fertilization (fertilized)?
300
Fish in the post-larval stage are sometimes called this? An expression meaning "small one" comes from this.
What is fry?
300
The lionfish uses this defense to show that he is poisonous.
What is advertising?
400
This extremely sensitive body feature made up of pores helps fish determine what else is swimming in a specific area.
What is the lateral line?
400
Rings which are formed by a fish's scales as it grows.
What are circuli?
400
The ability to see out of each eye separately.
What is monocular vision?
400
This is the first stage in which the fish has much resemblance to its parents.
What is juvenile?
400
This fin, which a fish can use somewhat like a weapon, can cut an untrained fisherman.
What is the dorsal fin?
500
A word for each group of hairs in a fish's lateral line. They convert movement into electricity.
What is a neuromast?
500
This flap covers the gills of the fish, and moves each time the fish breathes.
What is the operculum?
500
Fishes that begin life as males, but become females as they grow older.
What are hermaphrodites?
500
While in the larval stage, the fish feeds from this. When the fish stops feeding from this, it is said to be in the postlarval stage.
What is the yolk sac?
500
A special coloration that some fish have in which the body is light on the bottom and darker on the top. Because of this, a predator looking up at a fish may not notice it due to the light color blending with the light from above.