Fish have gills, scales, and fins. Some fish have the trait of having teeth.
they jellyfish eat fish
Dominant
For most organism's any trait is usually determined by two alleles/"genetic codes" for that trait (one from each parent). For example, your eye or hair color results from a combination of your mother and father's genes (one allele from each for hair/eye color). So, a specific trait for a fish follows the same process by which two alleles (one from each parent) are needed to represent the fish.
weird, colorful, shy, and yummy
Fish are too early on the development scale to have acquired that trait.
what is the trait you would use to a fish as belonging to either the phylum chordata or the phylum arthropada
Scales
It is a dominant trait. You only need one gene of a dominant trait for that trait to be expressed. You need two copies of the recessive trait in order for the trait to be expressed.
A dominate trait is a trait that appears even if an organism has only one factor for the trait.
The trait that is masked is recessive. The trait that does the masking is dominant.
The weaker trait is called the recessive trait The stronger one is called the dominant trait