The submarine fish is a kind of deep-sea fish, mainly living in the water depth of 500 meters to 2,000 meters between, is a kind of marine life adapted to the extreme deep-sea environment. Therefore, the submarine fish's food source also has some special characteristics. A good growing environment is crucial for the survival and reproduction of submarine fish.

The depth of the water layer in which they live is special and rich in various microorganisms, algae and other organisms, while the inner wall of their mouth is soft and suitable for swallowing small zooplankton. In addition, submarine fish develop in deep-sea environments and have a single food source, taking large quantities of deep-sea snails as their main source of food, so they need to have snail organisms suitable for predation growing in the area where they live.

2, submarine fish snail food

Submarine fish mainly prey on the following types of deep-sea snails:

(1) Bottle snail: This is a kind of deep-sea snail, the appearance of the bottle-shaped, grows in the deep sea floor. The submarine fish can open its mouth wide and swallow the bottle snail whole.

(2) Horned Octopus Snail: This is a large snail with a spiral body and threads on its surface, which often grows in deep-sea mud and sand. The submarine fish can use its sharp teeth to cut up the horned octopus snail before swallowing it.

(3) Nutty Octopus: This is a rare deep-sea snail that can grow to a depth of 3,000 meters. Due to the harsh growing environment, it is less abundant than other deep-sea snails, but has a higher nutritional value.

3. How submarine fish eat

Submarine fish have a unique way of feeding on deep-sea snails.

They open their mouths wide and bring the surrounding water into their mouths, then put the water back into the water after filtering it through filters such as gill arches, and at the same time swallow plankton and snails into their mouths, and then the whole thing goes into the stomach for digestion.

Additionally, the submarine fish will engage in passive feeding at night, where it floats in the water and waits for prey to actively enter its mouth.

4. The role of submarine fish in the ecosystem

Submarine fish, as an important part of the deep-sea food chain, play an indispensable role in the balance of the marine ecosystem.

They can control the number of deep-sea snails and maintain the balance of deep-sea biological populations, while promoting the reproduction and growth of deep-sea plankton.

At the same time, the study of submarine fish is also very important to help us better understand the deep-sea ecosystem, improve marine conservation, and develop deep-sea resources.