I sail out to catalina all the time and see these goofy little salt water commedians. You can keep them in a tropical aquarium but they dont last long because they do prefer colder water.
Catalina is usually about 60-68 degrees F. you have to wear a wetsuit most of the year. It is pretty cool water. Last time we went I decided not to wear a wetsuit and turned blue, this was in the middle of July.
My guess is that the
catalina goby being found off the coast of CA means its tropical but our currents keep Catalina water a little on the cooler side and its not as warm as say, Long Beach where the water can reach 72 F.
If you live close to CA and get a chance to go to Catalina, I suggest going to Two Harbors and snorkel or dive there to see these guys in the wild, they are too funny.
