Green Chromis - Chromis viridis
Abu Galawa Kebir, Coral Garden, Hamata (2009).
Adults of this species can grow up to 10 cm. It is a blue green fish. When they are breeding, males turn more yellowish. The male prepares the nest which is shared with several females. The nest is located on sand or rubble. The large number of eggs will hatch in 2–3 days. The male guards the nest and ventilates it with its fins and feeding on those eggs that do not hatch. Males feed on unhatched eggs to prevent them from being breeding grounds for microorganisms which risks their lives.
References
The Green Chromis, "Chromis viridis", is a species of damselfish. Individuals tend to be iridescent apple-green and light blue, and reach a maximal length of 10 cm. It is sometimes called the "Blue-green Chromis", but that may also refer to "Chromis caerulea", "C. caerulea" or Blue Puller, a close relative that is sometimes considered conspecific.