They are known to sit quietly on the bottom and then move quickly with a short, darting behavior. Many species of gobies are quite colorful, and they are often sold in pet shops. Gobies are typically predators on a wide variety of small benthic organisms. There are two families of fishes commonly referred to as blennies. Members of both families occur within the Indian River Lagoon and in adjacent coastal waters.
Most species have a drab or mottled brown coloration.
This coloration is beneficial to these fishes which, like the gobies, are associated with the bottom of the water column. Many species live in and around rock jetties and oyster beds, but some species can also be found within seagrass beds. Blennies are a highly territorial group of fishes that will aggressively chase off competitors for their living quarters. Many blennies like to live in holes, and they can also be found in shells and discarded cans and bottles. Like gobies, most blennies are predators on small bottom-dwelling animals.