Other marine fauna found on what DENR officials describe as 'relatively pristine waters of Puka Shell Beach' are sea stars, sea urchins, butterflyfish, moon wrasses, zigzag wrasses, damselfishes
and coral colonies.
Diets of damselfishes
also changed dramatically over the course of the year, the study found, fluctuating from periods where they mainly consumed coral to periods when their diets widened to include a suite of other organisms in the spring.
Found in coral reefs are colorful damselfishes
in large schools, large parrotfishes whose hues can range from dark blue to yellow to grey in eye-popping patterns.
You might be able to lose one species, because the others might be able to fill in the role--they could be herbivores cropping seaweed or damselfishes
keeping the corals in good nick, but if you start losing too many...
RAPD Probe on genetic variation in damselfishes
(Family Pomacentridae) in gulf of Mannar region.
If female blackeye gobies exhibit similar nesting preferences and habits as a number of damselfishes
that have been studied, multiple females may lay eggs in a single nest over a short period, producing what appears to be a single large clutch (Sikkel 1989; Knapp et al.
Allen in Smith & Heemstra (1986) also used Smith's painting of Chromis dimidiata and gave the distribution as "Tropical Indian Ocean reefs down to at least 30 m; Red Sea to Durban, common." In a review of damselfishes
of the world, Allen (1991: 66) illustrated Chromis dimidiata from Eilat, Red Sea and gave the distribution as "Widespread in the Indian Ocean including Kenya, Mauritius, Reunion, Chagos Archipelago, Maldive Islands, Sri Lanka, Andaman Sea, and Christmas Island." Allen also provided a color figure of Chromis iomelas Jordan & Seale, 1906 (also one in Randall et al.
When researchers fastened toxic seaweed strands to dangle against the corals, two kinds of damselfishes
were no help at all, abandoning the troubled sites within 48 hours.
Diurnal periodicity of spawning activity of permanent territorial damselfishes
Birds and fishes are especially prone to paternal care (Ridley, 1978); among them coral reef damselfishes
are known to be devote fathers (Breder & Rosen, 1966).
According to lead author Hiroki Hata, a researcher in the Graduate School of Science and Engineering at Ehime University, damselfishes
defended territories where certain algae grew by chasing off sea urchins and other fish.