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Biology the Callisoctopus Macropus

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-The Callisoctopus Macropus is an octopus, also known as the Atlantic White Spotted Octopus. Its mantle is about 20 cm long, or 8 inches. The total length is up to 150 cm and is about 59 inches. The entire octopus' body is red with white spots. It is full of spots, including arms. When it is disturbed by something, its colour becomes intense. This behaviour can threaten the predator. A structure they have called the mantle to create the outer shell. It can also be used for breathing, digestion, excretion, communication and reproduction. It has radula which is seen as a tiny tooth and used to get food. It can use the suckers on the arm to help move, but this is a kind of cephalopod, which means the arm is modified into a head and an appendage. Its suckers can also be used to capture food. A visceral mass is a mixture of all internal organs. The funnel can release ink to resist the visual use of the pits. Sexual reproduction is the most common, but there are other ways. It releases the egg into the water and completes fertilization with sperm in the water (Figure 1). After that, the eggs will hatch into larvae. Males produce sperm on a special arm called a basal body. Females lay eggs in the cave and protect them until they hatch into larvae. After fertilization, both males and females die. This is the life cycle of this species.

-Cherubfish is a fish. This is a very beautiful angelfish. Its common name is a squid. An adult fish can reach 8 cm. It belongs to Vertebrata. This means that it has a spine that surrounds and protects the dorsal nerve cord. They are endoskeleton, the skull protects the brain, has a better nervous system, and an advanced circulatory system. It has a changing temperature called cold blood form. It changes with the surrounding environment and the metabolic rate changes. This is a great way to stay warm in the water. It belongs to the bonefish, which means it has a lot of bones. It is the largest number of vertebrates. It has a ripple under the water. It moves with fins and is divided into caudal fins, tail fins, tail fins at the top and pectoral fins at the bottom. It has muscles around the chemical bonds. It also has a fishing rod to lift. Regarding fertilization (Fig. 2), the female fish discharges a large number of eggs into the water, and the male fish deposits milt on the eggs. Eggs are easy to hatch into larvae and then become fry. After frying, it will grow into a juvenile and adult fish. Though raising the larvae is quite another task. These dwarf angelfish are paired according to size, not colour. All fish are female when they are born, and then the larger fish becomes female. By buying a bigger angle and a smaller angel, they are likely to be a pair, and within a few months, they are expected to become male and female.

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