No bettas are fish not mammals. Bettas have a labyrinth organ which enables them to breathe air when there is not enough oxygen in the water to sustain them. Here are some things that separate bettas from mammals
Hair. Bettas have no hair or fur
Scales. Bettas have scales, mammals do not
Ability to breathe through gills. Mammals do not have gills, bettas do
Egg laying. Bettas lay eggs, mammals give birth to babies without shells that are able to breathe by themselves
no. cartilaginous fishes are sharks and rays.
Jawless fish are cartilaginous, but they do not have jaws. Class Chondrichthyes, which contains most cartilaginous fish, like sharks, have powerful jaws.
it is the cartilaginous fish.s
Similar to Stingrays, skates are cartilaginous.
Jawless fish and cartilaginous fish have cartilaginous skeletons, and bony fish have skeletons made from bone. Cartilaginous fish and bony fish both have jaws, paired appendages, and whole vertebrae, and jawless fish lack jaws, paired appendages, and often are without whole vertebrae. Cartilaginous fish can have scales or be naked, jawless fish are naked, and bony fish have scales. Bony fish have swim bladders, and cartilaginous fish do not. Jawless fish, cartilaginous fish, and bony fish all have fins, gills, and dorsal nerve cords that lead to a distinct brain. They all also have postanal tails and notochords.
Both jawless fish and cartilaginous fish have skeletons made of cartilage.
No betta fish are carnivores.
other Betta fish and the bigger fish.
Betta fish do not eat fish.
Well, if you love your Betta fish, then it should live by itself. But if you add another Betta to your current Betta fish's tank, then they will start a fight because Betta Fish are Siamese fighting fish and if one Betta is in contact of another Betta, the possible reason would be a fight between them two.
A betta is a fish of the species Betta, especially Betta splendens, commonly known as the Siamese fighting fish.
Lizards are not bony or cartilaginous fish, they are reptiles.