Marine hatchetfishes (deep-sea hatchetfishes) are small deep-sea mesopelagic ray-finned fish of the stomiiform subfamily Sternoptychina and are in no way associated with the freshwater hatchetfishes. Marine Hatchetfishes are found in the tropic/subtropic waters of the Atlantic, Pacific and Indian Ocean. Ranging in size from reasonably small to generally large,They are deep-sea fishes which have evolved a peculiar body shape and like their relatives have bioluminescent photophores which allow them to use counterillumination to escape predators that lurk in the deep parts of the ocean. Their large tube-shaped eyes can collect the faintest of light and focus well on objects both near and far.
Clownfish (anemonefish) are from the subfamily Amphiprioninae. In the wild they form symbiotic mutualism with sea anemones and are native to warmer waters of the Indian and Pacific oceans, including the Great Barrier Reef and the Red Sea,living at the bottom of shallow seas in reefs or lagoons.
the mutualism between Clownfish & Sea Anemones
Clownfish and sea anemones have a symbiotic/mutualistic relationship,each benefiting the other. The sea anemone protects the clownfish from predators and provides food through the scraps left from the anemone’s meals and occasional dead tentacles. In return, the clownfish defends the anemone from predators and parasites.The anemone also picks up nutrients from the clownfish’s excrement and functions as a homebase. The nitrogen excreted from clownfish increases the amount of algae incorporated into the tissue of their hosts, which aids the anemone in tissue growth and regeneration.
The leopard grouper (Plectropomus leopardus),a species of fish in the Serranidae family that is commonly sought-after. They dwell in the australian region and are known for their blue markings. Often found lurking in shaded areas waiting to strike unsuspecting prey that swims too close,they are piscivores (strictly fish-eating predators)
The Butterfly fishes are a group of tropical fish from the Chaetodontidae; the Banner fish and Coral fish family. Found mostly on the reefs of the Atlantic, Indian and Pacific Oceans.
This Species feeds on coral polyps and sea anemones. Balancing the relative populations of prey and predator. Butterfly fishes are pelagic spawners; that is, they release many buoyant eggs into the water, which become part of the plankton, floating with the currents until hatching.