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Fish

A fish is any aquatic vertebrate animal that is typically cold-blooded, covered with scales, and equipped with two sets of paired fins and several unpaired fins.

9,777 Questions

How does the round goby affect humans?

They eat another invasive animal, the Zebra Mussel. They eat about 75 of them each day!

What is the family of an angler fish?

angler fish do not have the class of family. THE CLASSES ARE. KINGDOM: ANIMALIA PHYLUM: CHORDATA CLASS: ACTINOPTERGII ORDER: LOPHIIFORMES

What is difference between fish scales and reptile scales?

Fins on a fish is what fish use to swim around, normally there would be three fins, one at the top and one on each side of the body.

Scales would normally be on the body, to keep it secure. The sizes can be different, but it depends on the size of the fish. A big fish would have big scales and a small fish would have small scales.

What family does a starfish belong to?

Starfish or sea stars are echinoderms belonging to the class Asteroidea

What type of symmetry do piranha's have?

Sting rays and many other animals have bilateral symetry. That means that their left side is essentially a mirror image of their right.

Can a girl swallow a fish?

Yes, but it will die! Someone swallowed my beloved pet goldfish.

Why would one fish hide from the others?

Most fish hide from fear of being eaten. Fish have a cannibalistic nature. It is a known fact a small fish will be eaten by a larger fish. Some will even eat the eggs. If you will take notice, todays fishermen use a false bate to catch fish. These false batesoftenlook like a fish. As lovely as the lakes. ponds,rivers, streams and oceans may look, it is a very hard place for fish to live. It is like living in a war zone. They never know when theirnext swim willbe their last. Often, when a fish is looking for food, a larger fish is looking for food. The smaller fish is a meal for the larger fish. National Geographs has shown several shows about the life of a fish. For people, life can be hard, but be glad we are not like the fish. Atleast we have some protection by law. The law of the fish seems to be.... EAT OR BE EATEN!

Why do fish need a counter-current system?

Fish need a counter-current system in their gills to maximize the efficiency of oxygen exchange. This system allows blood and water to flow in opposite directions, maintaining a gradient that ensures oxygen diffuses from the water into the blood throughout the entire gill surface. As a result, fish can extract a higher percentage of oxygen from the water, which is crucial for their survival in often oxygen-poor aquatic environments. This adaptation enhances their respiratory efficiency, supporting their metabolic needs.

Why did fish evolve into four legged vertebrates?

As a rule, they don't; however, some species have vestigal legs or bones that can be hidden within their bodies(ie: part of their skeletal system), while others like the Mudskipper have actual modified fins, etc. that work as functional legs and such which they use to make their way over land to get to new sources of water, among other things.

Can fish travel on land?

Anabantoids

and

Corydoras

http://www.theaquariumwiki.com/Category:Corydoras

http://www.theaquariumwiki.com/Category:Anabantoids

Quite a few of the cat fish in the family of Callichthyidae breath air

http://www.theaquariumwiki.com/Callichthyidae

What characteristic do reptiles and fish share?

Both are usually coldblooded, usually egg-laying, live in water, normally smooth skinned (slippery) and most of them have gills, amphibians can be on land and water at the same time such as frogs.

What are the signs when the fish is about to lay eggs?

This will depend on what type of fish you purchased.

Most fish are egg bearing and unless there is a male to fertilize the eggs, then the female will either re-absorb the eggs, or release unfertilized eggs that will be eaten (such as a goldfish).
If you purchased a molly or a guppy for example, those are live bearing fish and it's not uncommon to buy a female that is already pregnant.

Do cartilaginous fish have operculum?

Jawless fish are cartilaginous, but they do not have jaws. Class Chondrichthyes, which contains most cartilaginous fish, like sharks, have powerful jaws.

Does fish provide shelter my friend thinks they do?

No Fish doesn't provide shelter it is our primary source of BACON