The largest and most diverse group of fish are the ray-finned fishes. These include many, but to name a few; seahorses, pipefish, puffer-fish and flatfish...etc.
Bony fishes
It is as primitive as a cave man.
Anthropods is the largest and most diverse of all animals. These animals have segmented bodies that are supported by an exoskeleton. This group includes spiders, crustaceans, millipedes, and centipedes.
Most fish (the ones with gills and fins) are vertebrates.
The blue whale family of course.
A: jawless fish
Former Answer by some dummy: "The most diverse group is insects, which belong to the group ARTHROPODA*.*Arthropoda-Largest and most diverse animal phylum, mostly insects."This answer is completely wrong based on the question.Arthropods are invertebrates! They are the most numerous INvertebrates.The most diverse vertebrates are BONY FISH.
Cnidarians are the most diverse group.
The Arthropods are the largest and most diverse.
The catfish belongs to a diverse group of ray-finned fish, order Siluriformes.
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.
group 1A
The most diverse group of gymnosperms are the conifers.
Bony Fishes
Angiosperms
penis
Angiosperms
Angiosperms