The answer would be fish as they are the simplest organisms listed and have been around the longest leading to many different species, much more than the others.
Mammals,Reptiles,Amphibians,Birds,Fishes.
Mammals, birds, fish, reptiles, amphibians
Pisces (fish), aves (birds), mammals, reptiles and amphibians
All tetrapodes , mammals , birds , reptiles and amphibians .
Mammals, reptiles, amphibians, birds and fish are the five groups of animals.
The aardwolf is a vertebrate. Like all mammals, it has a backbone and spinal column. Birds, mammals, fish, reptiles and amphibians are all vertebrates.
A vertebrate. All fish are vertebrates, as well as all birds, reptiles, amphibians, and mammals.
A vertebrate. All fish are vertebrates, as well as all birds, reptiles, amphibians, and mammals.
Vertebrates are all the animals classed as birds, mammals, fish, reptiles or amphibians.
Mammals, some amphibians, some reptiles, and most birds.
The goldfinch is a vertebrate. Like all birds, it has a backbone. Birds, mammals, fish, reptiles and amphibians are all vertebrates.
Yes. Any animal that has a backbone or spine is a vertebrate. This includes mammals, reptiles, amphibians, fish and birds