Fish live underwater, where there is no air to breathe. They have evolved gills to extrect dissolved oxygen from water. Fishes do not have lungs as it cannot filter air from water like gills, therefore, if fishes had lungs, their lungs would be filled with water, making them unable to breathe and survive.
All animals have hearts. Smaller the animal smaller the heart. With smaller animals their heart beat for fast. For elephants it is slow.
Really? My question for you: Why do you have a heart?
octopuses have 3 hearts and so do earthworms, squids have 3 hearts, so do crocodiles also some fish have 3 hearts i think frogs do too but i am not sure. earthworms also have blue blood. i hope this answer is some help
Fish are the animal group that have two-chambered hearts. Reptiles and amphibians have three-chambered hearts and mammals have four-chambered hearts.
Any small animal's metabolic rate is higher/faster than the larger/bigger ones. And breathing is positively correlated with metabolism. Thus small fish breath faster than large fish.
some fish eat algae. it just depends on what fish you are talking about. But yes fish do eat algae.
Yes, but they have a closed circulatory system (their hearts have only two valves) and gills instead of lungs.
Fish hearts have 2 main chambers: the atrium and the ventricle. Fish have the simplest hearts of all the vertebrates.
Yes, fish have hearts. All animals have hearts.
Fish hearts have 2 main chambers: the atrium and the ventricle. Fish have the simplest hearts of all the vertebrates.
Cuttle fish and Octopus
cuttle fish and octopus
yes
2
small
cuttle fish...
small fish are not carnivores they are herbivores.
a small fish is a small fish and so is a pancake batfish! TROLOLOL mino fish
You have a pokewatch app that if you touch the pokemon it will give you a certain amount of hearts depending on how much it likes you(no hearts, 1 small heart, 2 small hearts, 2 big hearts(max happiness))