Arowana, Barracuda and Angelfish planted predator tank

The biologist placed a barracuda into a small tank and then added some small bait fish.
Photo provided by Flickr
Red Tail Barracuda are hardy and disease is not usually a problem in a well-maintained aquarium. That said, there is no guarantee that you won't have to deal with health problems or disease. Anything you add to your tank can introduce disease. Not only other fish but plants, substrate, and decorations can harbor bacteria. Take great care and make sure to properly clean or quarantine anything that you add to an established tank so as not to upset the balance. Because these fish eat live foods, disease can be passed to them from their foods. To prevent this, quarantine live food before feeding.
My marble motoro flower stingray Tigrinus catfish and discus tank with Monster barracuda and vampire tetra coming
Photo provided by Flickr
Researchers once did a study in Florida in which they divided a large, fish tank in half by putting a glass wall in the middle. A barracuda was put on one side of the tank and a mackerel on the other. The hungry barracuda tried to get the mackerel but smacked into the glass barrier. Again and again, the barracuda smacked the glass in its attempt to reach its dinner. Finally, realizing how futile its attempts were, the barracuda gave up. Feeding Barracuda minnows in Fish Tank - YouTube
Photo provided by FlickrThis is my barracuda in my 10 gallon fish tank
Photo provided by FlickrFreshwater Barracuda - The Fish Tank - Turtle Forum
Photo provided by Flickr
Feeding Barracuda minnows in Fish Tank - This is my barracuda in my 10 gallon fish tank. His name is bubba :D Feeding him tiny guppy minnows from the lake by our house. They kind of look like baby ...Barracuda are very aggressive, predatory fish and are likely to take a bite out of similar sized fish, though reportedly will leave bigger, similarly aggressive fish alone. Anything significantly smaller is too likely to be attacked and consumed. They are also inquisitive fish and in nature are known for investigating divers in the area, sometimes following them in hopes of picking up scraps to eat. These fish are also prone to jumping and tanks should be covered and latched down with a lock or something similar.Species name: Ctenolucius hujeta

Synonym: Ctenolucius hujeta

Common name: Freshwater Barracuda

Family: Ctenoluciidae

Order: Characins

Class: Actinopterygii

Maximum size: 70 cm / 28 inches

Environment: Greshwater

Origin: Northern Colombia

Temperament: Aggressive

Company: Ctenolucius hujeta (Freshwater Barracuda) should only be kept with other peaceful species that are too large to swallow.

Water parameters: Temperature 22-26°C / 72-79°F; pH 6.5 – 8.0

Aquarium setup: Ctenolucius hujeta (Freshwater Barracuda) requires a large aquarium tank. The aquarium should be densely planted in the back and along the sides but still provide plenty of open space in the center of the aquarium for the fish to swim on. They are excellent jumpers and a well covered aquarium is a necessity. They seldom grow to their full length in aquariums. This species is best kept in schools.

Feeding: Ctenolucius hujeta (Freshwater Barracuda) can be hard to feed and often only accepts live food of suitable size. Some specimens can be thought to eat dead food but most Ctenolucius hujeta (Freshwater Barracuda) will only taste it and spit it back out.

Breeding: Ctenolucius hujeta (Freshwater Barracuda) breeding is hard but possible. Keep one male with two females in a large aquarium. Condition them well before trying to get them to spawn. An increase in the temperature seems to help trigger spawning. The temperature might have to be raised a little above their normal temperature span (22-26°C / 72-79°F) This species is very productive and one spawning can result in more then 1000 small Ctenolucius hujeta (Freshwater Barracuda).

Temperature depends on species, but for all should remain stable. The majority of these fish are Subtropical and will likely be fine around room temperature, but the Tropical species (Mexican Barracuda, Southern Sennet) will all need heaters in the tank. The Pacific Barracuda is a Temperate species and will require a chiller to keep the temperature down. A good target temperature should be around 55F for this species.