The Humpback Anglerfish is a type of fish that is a part of the family of ‘black seadevils’. They have an unusual, ‘angry-looking’ and scary face. It is also referred to as the Johnson’s anglerfish or the humpback blackdevil. They use a bioluminescent spine with a distinctly diffused blue light to move around in dark waters. Recognized immediately for their unusual appearance, they are also considered to be some of the ‘ugliest’ creatures in this planet.
Humpback Anglerfish Scientific Classification
Here is a look at the distinct physical characteristics of the Humpback Anglerfish.
The lifespan of the Humpback Anglerfish is unknown.
The Humpback Anglerfish can be seen in almost all parts of the world, both in tropical as well as temperate areas of the oceans. They have been spotted in high numbers along East China Sea and South China Sea.
Humpback Anglerfishes are mostly found within the deepest waters of the planet’s oceans. Since they are found at depths of 3000 feet and beyond, the area of the water is completely dark. The complete lack of sunlight in such depths also makes the water extremely cold and almost freezing.
So far it has not been possible to study the behavior of these fishes as most of the time they live in extreme depths of ocean bodies. The males are very small which means that they are not predatory. On the other hand, the females are very large and therefore tend to be more dominant in their behavior. Males are not aggressive hunters and they prefer to ambush their prey, silently waiting for them to come closer as they grab them. The light that these fishes have on their foreheads is used for attracting the prey. These fishes move back and forth to cause a pulsating effect of the light so that this attracts other fishes and crustaceans which can be eaten as food.
The diet of Humpback Anglerfishes mostly consists of other small fishes, turtles, shrimps and small squids.
Mating and Reproduction
Mating period for the Humpback Anglerfish is shorter than some of the other types of anglerfishes. The body structure of the males makes it easier for them to find females for mating.
Male anglerfishes use their body scent and light for detecting the females. After they have found the females, the males use their hooked teeth to attach themselves to the female and starts drinking the blood from the female while supplying sperm for fertilizing the female’s eggs.
After the short mating spell comes to an end, the male anglerfish starts looking for another female to attach itself with. Reproduction in these fishes happens through external fertilization. The female fish releases the eggs or ovum in the water whereas the males immediately provide their sperm and this leads to fertilization of the eggs.
Females lay their eggs on a layer of gelatinous material which usually floats on the surface of the water. The eggs start hatching to larvae soon and they feed on the tiny planktons till they grow up to a considerable size. Once the larvae start to mature, they are going to go back to the depths of ocean.
The males are very small and only reach up to a size of 3 centimeters in length. As they reach sexual maturity, they start searching for females to mate with them sexually.
Have a look at the distinct adaptations that the humpback anglerfish has developed.
There are no known predatory creatures for the humpback anglerfish. It is believed that these fishes are heading the food chain which means that they are mostly predators and not preys.
IUCN 3.1 has listed the humpback anglerfish under Least Concern category as they are found in plenty in all parts of the world.
Check out the highly interesting facts about the humpback anglerfish.
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