How much is a wolf eel worth?

How long do wolffish stay with their eggs?

Instead of the female depositing her eggs in the open ocean for the male fish to fertilize and then continue on his way, they are internally fertilized and the male wolffish stays with the nest and protects the eggs for as long as four months, until the brood is strong enough to gain independence.

Are wolf eels related to eels?

Wolf eels are not related to eels. Instead, they part of a family known as the wolffishes (Anarhichadidae). They belong to an even larger group of fish known as Perciform fishes, generally thought of as the perch-like fish. Their long-bodied, eel-like appearance is unique in this group of fishes.

How do wolffish fertilize their eggs?

The way how this species fertilize its eggs is very different from other fish. Atlantic wolffish fertilize their eggs internally and the male remains in the nest, protecting them during about four months. When the young are large and strong enough to be independent, the male withdraws from its nest.

How many eggs does a wolffish lay?

One female can produce anywhere from 5,000 to 12,000 eggs in her lifetime. The size of the fish affects the number of eggs, with larger females laying more. Once the female lays her eggs on the ocean floor, the male wolffish stays around to help protect them, sometimes up to four months.

How do wolffish survive in cold water?

It is natural to wonder how the fish survives in such frigid waters. The Atlantic wolffish, which faces the highest risk of freezing, produces a natural antifreeze that keeps their blood flowing smoothly.

What is the life cycle of an Atlantic wolffish?

Atlantic wolffish live up to twenty years old and have a late maturity cycle, being incapable of sexually reproducing until they are eight to ten years old. These wolffish form breeding pairs in spring to summer and mate in the fall. Their method of fertilizing their eggs is much different from most fish species.

What is the size of an Atlantic wolffish egg?

Their eggs are 5.5–6.0 mm in diameter, (among the largest fish eggs known), yellow tinted and opaque. The eggs are laid on the ocean floor, many times in shoal water, sticking together in loose clumps, surrounded by seaweed and stones. Atlantic wolffish mature relatively late, at age six.

How do fish fertilize eggs?

Their method of fertilizing their eggs is much different from most fish species. Females do not deposit eggs in the open ocean for the male to fertilize. Rather, the eggs are fertilized inside the female fish. One female can produce anywhere from 5,000 to 12,000 eggs in her lifetime.

What is the minimum temperature for a fish to survive?

They live at depths of 66 to 1,640 feet in cold water as low as 30°F to 52°F (-1 to 11°C). Their bodies’ makeup allows them to survive near-freezing temperatures.

What is the life cycle of a wolffish?

Wolffish are relatively sedentary and they typically live alone, except during spawning season when male and female wolffish form bonded pairs. Wolffish typically begin to reproduce by the time they reach ages 5–6. Peak spawning season for Atlantic wolffish is September to October.

What is the breeding season for Atlantic wolffish?

Peak spawning season for Atlantic wolffish is September to October. Wolffish lay their eggs in masses, which the males guard for approximately 3–9 months until they hatch. Adult wolffish primarily feed on bottom-dwelling invertebrates, such as scallops, hermit crabs, Jonah crabs, and sea urchins.

Do Atlantic wolffish lay eggs internally?

Atlantic wolffish fertilize their eggs internally and the male remains in the nest, protecting them during about four months. When the young are large and strong enough to be independent, the male withdraws from its nest. The eggs measure between 5.5 and 6 mm in diameter which makes of them the biggest of any species. .

What size are wolffish eggs?

Wolffish eggs are the largest of any fish, with sizes of 5.5 to 6mm diameters. They have an opaque, yellowish tint and clump together. It can take between three to nine months for the fish eggs to hatch, based on water temperature.

Are there any cold water fish that can survive?

In fact some cold water fish may actually prefer so called tropical temperatures. Just because a species is capable of surviving large water temperature changes it doesn’t mean that they are of no consequence. A good cold water aquarium fish is one that is able to tolerate a wide temperature range. Goldfish would be a classic example.

Do fish prefer higher or lower water temperatures?

If the water temperatures naturally fluctuate then the fish have the ability to tolerate a much wider range of temperatures. Discus thrive best at the higher range of temperatures whereas species such as white cloud minnows prefer a much lower average.

What is the lowest temperature to keep fish in a tank?

It depends on the fish. 25 degrees celcius is the ideal teparature for most fish, but you can lower it to about 22 degrees. If the fish is hardy, maybe even lower. I kept guppies caught from my local stream at about 15 degrees and none died. Don’t do that though. For your temperature related question, 72F is probably the lowest I would go.

Can fish control their own body temperature?

Fish, unlike mammals and birds, are unable to control their own body temperature. They are scientifically referred to as poikilothermic. That is, their metabolism closely reflects the temperature of the water in which they live.

How old do Atlantic wolffish have to be to reproduce?

Atlantic wolffish are not thought to reproduce until they are between eight and ten years old.

Are wolffish solitary fish?

They are usually solitary fish, although, as they are not territorial, rocky areas containing a large number of suitable hiding places may contain several Atlantic wolffish. The name of this species comes from their teeth which resemble those of a wolf.

What is the difference between Atlantic wolffish and northern wolffish?

The northern wolffish has a more uniform colour, sometimes with a slight marbled or speckled pattern. It also usually has a fatter, almost bloated body, when compared to the generally slimmer body of the other two species. Atlantic wolffish is commercially valuable and is sold as a food fish.

How do Atlantic wolffish care for their young?

Atlantic wolffish fertilize their eggs internally and the male remains in the nest, protecting them during about four months. When the young are large and strong enough to be independent, the male withdraws from its nest.

How many babies do wolffish have?

The Giant Wolffish reproduce during the rainy season in their South American habitat; which is in between the months of December and March. A single female, depending on its size, can carry anywhere between 6,000 and 60,000 eggs. Fish study buffs have described the behavior of the Hoplias aimara as hot and cold.

What is the size of a fish egg?

Their eggs are 5.5–6.0 mm in diameter, (among the largest fish eggs known), yellow tinted and opaque. The eggs are laid on the ocean floor, often in shoal water, sticking together in loose clumps, surrounded by seaweeds and stones.