Why Small Fish Are Perfect for Home Aquariums Small fish might be tiny in size, but they bring massive personality, beauty, ...

Endler also observed differences in the distribution of guppy predators, and in the color and size of gravel in different stream locations.

Guppies were sampled from eight populations representing four river drainage basins in northern Trinidad, and from one population on the nearby island of Tobago. For each individual, a 465 base pair ...