After some 7 years of close study, it has become apparent to me that some of these cichlid hybrids exhibit several behaviors generally ascribed as too sophisiticated for fish. These include rudimentary tool use, overt play behavior, and cooperative communication between mated pairs including acoustic communication. The subjects of this research has all been housed in a row of tanks in my bedroom, and these benaviors occur sporadically and quickly, and would be otherwise hard to document....
