The Numasa lives in the Neritic zone. It lives in deeper water between 200-400 feet and is found in the Benthic zone. Some of the abiotic factors in these zones are the water temperature and the rocky bottom that the Numasa prefers to live in.
The Numasa has gills which allows it to remain deep in the water column without coming to the surface for air. It also has large eyeballs, which allow it to see its prey since there is little amounts of light in deeper water.
The Numasa has fins that allow it to swim. Although it has fins, it does not swim long distances very often since it lives in rock piles and uses them as protection against predators and also an ambush spot for prey.
The Numasa eats by ambushing its prey. It is equipped with a horn on its head so when a smaller fish swims by, it can ambush it and injure the prey to make a quick and easy meal, and then go back into hiding to wait for its next victim. The Numasa's main prey is smaller fish, crustaceans, and even baby eels.
The Numasa's average size is about 5-6 pounds and an average of 20-24 inches long, and can sometimes be up to 10 pounds and about 30 inches long depending on the amount of food in the ecosystem where it lives.
Since the Numasa lives in areas with rocky bottom, it is dark brown in color to camouflage into the rocks to hide from predators and to also ambush prey. The Numasa's camouflage is vital to its survival and ability to eat.
The Numasa protects itself with its camouflage and stays concealed in the rocks to avoid detection from predators. It also has a horn on its head that it can use to fight off predators by slashing it and can actually cause serious harm with it since it is sharp and jagged. The Numasa is also lined with poisonous spikes all over its body to where if another fish is stung by them, they will go into shock and die.
The Numasa is a benthic creature. It only lives on the bottom of the ocean since its only able to camouflage in rocks. The Numasa can swim like regular fish, but spends most of its time concealed in the rocks so it can hide from predators and ambush prey. It lays on the sea floor and will only come out of hiding to ambush its prey.
The Numasa uses gills to breathe under water. Since it is an ambush predator and spends mostly all of his time hiding, having the capability to breathe air and having lungs would be completely useless for this type of organism.
The females pick a mate by which male is closest in size to them. The Numasa reproduces when a female lays her eggs in the sand and a male fertilizes them. Numasas reproduce this way because they rarely ever leave the protection of the rocks. The typical ecosystem has 2 males and the other 3 are females, so there is no competition of males to reproduce. Once the eggs are fertilized in the sand, most of them will never hatch because organisms such as crustaceans and eels find the eggs and eat them.