- There is over 25,000 known species on earth.
- One of the most popular pet in the U.S are tropical fish.
- Just like mammals fish feel pain and suffer stress.
- Fish have been on earth for 450 million years.
- Fish were on earth even before dinosaurs.
- A group of fish is called a “school.”
- Fish are classified into three different groups: cartilaginous fishes, bony fishes, and lobe-finned fishes.
- The first animals to evolve backbones were fish.
- Fish are cold blooded animals.
- Goldfish are originally from China, later from Japan.
- A sharks body are formed of cartilage instead of bones.
- Fish have a lateral line system which helps detect movement in the water.
- Some species of fish have skeletons only made up of cartilage.
- Philippine goby is the smallest fish that is one third of an inch when fully grown.
- Fish have an organ called lateral line which help them navigate through dark and musky water.
- The great whale shark is the largest fish which can grow up to fifty feet in length.
- The most poisonous fish in the world is the stone fish.
- A goldfish can live up to forty years.
- Starfish were changed to the name sea stars because starfish are not fish.
- Goldfish like cold, temperate waters, also they like it calm and peaceful.
- Sharks have five to fifteen rows of teeth.
- A giant squids eye can be as big as a basketball.
- A jelly fish is ninety-five percent water.
- A majority of fish are counter-shaded.
- There are over 400 different species of sharks.
- On an average tuna fish can swim a up to forty-three miles an hour.
- Octopuses have three hearts
- Fish roamed the earth long before dinosaurs did.
- Starfish can have up to sixteen arms.
- Unlike most fish sharks do not have scales.
- When dolphins sleep they keep one eye open.
- The blue whale is the largest mammal, which weighs fifty pounds at birth and 150 pounds when fully grown.
- Fish make up more than half the known vertebrate species.
- All fish have a backbone, that means all fish are vertebrates.
- A person who studies fish is called an ichthyologist.
- Some sharks give birth to live young, others lay eggs.
- Many fish are fusiform (torpedo-shaped) to help them swim more efficiently through water.
- Forty percent of fish live in fresh water.
- When it comes to eating fish, wild caught fish are better than farmed fish.
- Goldfish range from six to seven inches (fifteen to twenty centimeters.)
- the largest group of fish are ray- finned fishes.
- By forming wave contractions alone their muscles fish are enabled to swim.
- Many fish have a dorsal fin which provides stability.
- Humans are considered threats to sharks.
- Fish also have ventral fins which helps with steering.
- Fish have slimy mucus which coats their scales to help protect them.
- The first species of sharks appeared 420 million years ago.
- Fish have gills for breathing in the oxygen through the water.
- A fish’s swim bladder helps them with buoyancy in the water.
- Sharks range from ten inches to over fifty feet.
