Do electric catfish eat other fish?

What do electri fish eat?

Electri are usually nocturnal and carnivorous. Some species feed primarily on other fish, incapacitating their prey with electric discharges, but others are generalist bottom forager, feeding on things like invertebrates, fish eggs and detritus.

How are catfish feeds made?

In single-batch production, fingerling catfish are stocked and grown until almost all of the fish have reached market size, then the entire pond of fish is harvested at once, and then the pond is re-stocked. In catfish feed production, the ground feed ingredients are mixed and sent through an extruder, resulting in feed pellets that float.

How many volts is the electric current of a fish?

They generate electric currents of 8-220 volts (in sea water, the electric current passes more easily) to kill or stun their prey with their head electric organs, derived from bronchial muscles.

What is the function of electric voltage on an eel?

It can be concluded, the electric voltage on the eel has two functions, namely for the five senses as navigation, the electricity released is small electric power. But if the eel is faced with an enemy, it will produce the greatest voltage. For example, attach one end of his body to the opponent’s body.

What type of electric discharge do fish give?

Strongly electric marine fish gives low voltage, high current electric discharges. In salt water, a small voltage can drive a large current limited by the internal resistance of the electric organ. Hence, the electric organ consists of many electrocytes in parallel. Freshwater fish have high voltage, low current discharges.

Do electric fish have convergences in their trunks?

If an electric fish lives in an environment with little to no obstructions, such as some bottom-living fish, their electric organ has been seen to have less prominent evolutionized convergences between the trunk and the organ.

Why do fish have high voltage and low current discharge?

In salt water, a small voltage can drive a large current limited by the internal resistance of the electric organ. Hence, the electric organ consists of many electrocytes in parallel. Freshwater fish have high voltage, low current discharges.

What fish can produce high voltage electricity?

Electrophorus electricus. Electrophorus electricus—everything about this fish’s scientific name says high voltage! So, it’s no surprise that of the fishes able to generate an electrical discharge, electric eels are the champions, producing up to 600 volts! Electric eels live in muddy waters.

Which aquariums need higher flow rates and stronger currents?

Aquariums that need higher flow rates and stronger currents include: Aquariums with large fish. These need higher flow rates, stronger currents, and additional power-heads to get as much fish detritus into the filter as possible for quick removal. Reef tanks need higher flow to circulate water in all areas of the aquarium.

How do fish detect changes in water?

Since water conducts electricity, some fishes can use a low-level electric field to detect changes in their vicinity. They generate this field by emitting pulses from an organ near the tail and pick up changes with sensory receptors near the head or by using their lateral line.

Why do fish stay in the same water all day?

So, the water is naturally resistant to temperature changes in the air, and there isn’t much daily variation in water temperature. Thus, fish maintain their internal temperatures by staying in water of the correct temperature, which is much less sensitive to day and night than the air.

Why do fish move sideways in water?

The gradient causes water to move sideways across the body. This lateral motion can disrupt the boundary layer, the layer of water right next to the moving body (the fish), which is crucial to reducing drag. Tuna and many other fast fish have varying numbers of small fins on or near their caudal peduncle.

Why do fish swim so easily in water?

This ease of movement that fish have in water is a result of their flexible backbones as well as some systems in their bodies. A fish expends a large amount of energy while swimming. This is not because it swims fast for long times.

When is a fish a swimming fish?

In simplistic terms, when thrust is greater than drag, or resistance from the water, you have a swimming fish.

Why do fish swim so fast?

If a fish senses danger it can move fast. Excitement can also make a fish to swim fast, this is when fish kind-of-make fantastic displays like jumping out of the water and back into the water, swim like in a race.

What can make a fish go fast?

But if we talk of what can make it go fast then it could be due to any slight movement of the water. If a fish senses danger it can move fast. Excitement can also make a fish to swim fast, this is when fish kind-of-make fantastic displays like jumping out of the water and back into the water, swim like in a race.

How do fish sense their own EODs?

They sense their own electric organ discharges (EODs) and those of other fish with specialized sensory receptors called electroreceptors. The EODs are sexually dimorphic and convey information about the species, age, gender, and individual identity of the signaler.

How do fish refract light?

The interactive tutorial initializes with a human eye observing a fish beneath a layer of water. Light rays reflected from the fish are refracted at the surface of the water, but the eyes and brain trace the light rays back into the water as thought they had not refracted, but traveled away from the fish in a straight line.

How do fish see the depth of water?

Light rays reflected from the fish are refracted at the surface of the water, but the eyes and brain trace the light rays back into the water as thought they had not refracted, but traveled away from the fish in a straight line. This effect creates a “virtual” image of the fish that appears at a shallower depth.

How do fish sense their prey?

Most fish have sensitive receptors that form the lateral line system, which detects gentle currents and vibrations, and senses the motion of nearby fish and prey. Sharks can sense frequencies in the range of 25 to 50 Hz through their lateral line. Fish orient themselves using landmarks and may use mental maps based on multiple landmarks or symbols.

Can fish sense vibrations?

Most fish can also sense vibrations (‘hearing’) to a greater or lesser degree through their lateral lines, ears, and swim bladders. Sharks and rays are particularly sensitive to the minute electrical fields put out by living creatures, and some species use this facility to hunt out prey buried under bottom sediment.

Why do fish move with no head or guts?

Fish move with lack of head or guts because the nerves are still firing. Fish, reptiles and amphibians have slow metabolic systems and the action potentials of the nerves remain active because they can operate in much wider ranges of temperature and conditions than mammalian systems.

Why do fish swim in the water?

A fish swims to move in the water, eat, travel, survive, live. Swimming is how fish move in the water like how animals on land walk and run. How do star fish move under water?

Why do fish have streamlined bodies?

Most fish have a streamlined body – the head and the tail are narrow; the middle portion of the body is broader. This kind of shape offers least resistance to the flow of water and makes it easier for them to swim through water. Aeroplane, ship, and boat also have streamlined shapes to reduce resistance to the flow of air and water.

Can fish swim faster than humans?

Now a computer simulation has provided the answer. When it comes to swimming, fish demonstrate an effortless grace and power that humans can only dream of. While the fastest fish swim at up to 70 miles per hour, no human has ever managed even 4 mph in water. Even the fastest submarines have a top speed of only 50 mph.

How do fish help in swimming?

Streamlined shape, fins, and tail help in swimming. Fish have fins and a flexible backbone that help them to swim.