Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!seismo!cmcl2!yale!husc6!mit-eddie!rutgers!clyde!masscomp!ulowell!dpage From: dpage@ulowell.cs.ulowell.edu (Dee Page) Newsgroups: sci.bio Subject: Spawning of Triggerfish Message-ID: <945@ulowell.cs.ulowell.edu> Date: Wed, 14-Jan-87 13:30:39 EST Article-I.D.: ulowell.945 Posted: Wed Jan 14 13:30:39 1987 Date-Received: Thu, 15-Jan-87 22:24:44 EST Reply-To: dpage@ulowell.UUCP (Dee Page) Distribution: world Organization: University of Lowell Lines: 25 Hi, does anyone know anything about triggerfish? There is currently some research going on at the New England Aquarium concerning the spawning of triggerfish. They are observing the triggerfish in captivity and trying to notice any periodicity. They have come up with some theories, but are at a loss to explain them. It seems they are on a lunar cycle, but they don't know how the moon could be having any effect. No moonlight can enter, they were in the tank before their first spawning, and they feel that gravity cannot have a big enough effect due to the size of the tank. These are not my opinions, I have already told them mine. What I am wondering is: does anyone have any good references on triggerfish; lunar effects on spawning (my pet theory is the gravitational effect) of any fish, especially in captivity; and periodicity in fish in general and in captivity. They are also looking at the effects of the lighting cycle at the aquarium, temperature, and other variables. They also noticed a seasonal peak, but have not acquired enough data to begin hypothesizing. Thank you very much, Sincerely, Dee Page