UNDERWATER MCU of male cichlid swimming. UNDERWATER MS MCU of male cichlid swimming to spawning sand castle. UNDERWATER MS of male cichlid enticing female into sand castle, performing mating dance. UNDERWATER MCU MLS of crab entering male cichlid sand castle. UNDERWATER MS MCU of crab hiding among rocks full of cichlids. UNDERWATER ECU of crab claws/crab larvae. (609)