I followed the advice from the guys at the piranha fury forum and bought 4 more piranha from the same vendor. I have been told anywhere from 12 up to 20 gallon's per fish. Having at least 6 piranhas in the aquarium is important in terms of displaying herd behavior. I just bought 3 red belly's about 1.5 inches long and have them in a 12 gallon tank for now. Red-bellied piranhas are red on their undersides from chin and cheeks to belly. , Acoustic communication among red-bellied piranhas is exhibited along with aggressive behaviors, such as biting, chasing, conspecific confrontation, and fighting. thanks for looking! Warning: Red Bellied Piranha is not recommended for your tank - it may eventually outgrow your tank space, potentially reaching up to 12 inches. Piranha was followed by a sequel, Piranha II: The Spawning, in 1982, and two remakes, one in 1995, and one in 2010. They are a popular aquarium fish. Going by 1 inch of fish per gallon of water, you'd need a 200 US gallon tank for just the eight piranhas. , Pygocentrus nattereri encompasses a larger geographic area than any other piranha species, covering much of the Neotropical region. In studies that tested the piranhas' reactions to a simulated predator attack, resting opercular rates returned to normal more quickly amongst piranhas that were in shoals of eight rather than in shoals of two. When the piranhas are 5 inches or bigger then start feeding them well with live food such as baby fish, etc. What Size Tank Should Red-Bellied Piranha Live in? At the Smithsonian's National Zoo, red-bellied piranhas receive a gelatin diet (a mixture of greens, proteins and micronutrients in a gelatin base), smelt, shrimp, herring and earthworms. Share the story of this animal with others. , Many myths surround this species. The red-bellied piranha belongs to the family Serrasalmidae, which is a group of medium to large-sized characids and includes other closely related omnivores such as pacus. 1 @ 5 inches.  As their name suggests, red-bellied piranhas have a reddish tinge to the belly when fully grown, although juveniles are a silver color with darker spots. Red-bellied piranha reproduction begins with a courtship display involving swimming in circles. Shoaling behaviour of the Amazonian red-bellied piranha", "Population ecology of Red-bellied Piranha, "Sound production in red-bellied piranhas (, https://en.wikipedia.org/w/index.php?title=Red-bellied_piranha&oldid=992645525, Articles with unsourced statements from October 2019, Creative Commons Attribution-ShareAlike License, This page was last edited on 6 December 2020, at 11:00. The presence … Although this may appear to be a courtship display, a closer look reveals that the adults are actually defending nesting sites. How long do piranhas live? True to their name, red-bellied piranhas are red on their undersides from chin and cheeks to belly. , Piranhas have two annual reproductive seasons; these seasons are tied to water level fluctuations, the flooding pulse, temperature, and other hydrological conditions. As their name suggests, red-bellied piranhas have a reddish tinge to the belly when fully grown, although juveniles are a silver color with darker spots.  When left unattended, other fish, such as characids, may prey upon the eggs. What do you guys think? We feed ours about 1 goldfish each, every 2-3 days. The typical diet of red-bellied piranhas includes insects, worms, crustaceans, and fish. What can do for a red belly piranhas to get big? 9 Red Belly Piranhas Goes To Town On A Mouse! Red belly piranha grow about 6 inches in the first year and about an inch per year after that and max out at about 10-12 inches. Educational Activities You Can Do at Home, About the Smithsonian Conservation Biology Institute, Pouncing On Enrichment: Stories from Real-Life Zoo Guardians. Smaller fish will search for food during the day, while larger fish will forage at dawn, in the late afternoon, and in the early evening.  Within the family, red-bellied piranhas are classified in the genus Pygocentrus, which is distinguished by the unusual dentition and differing head width dimensions. How big do piranhas get? The piranha may also catch prey by hunting and chasing, where it will lie hidden in the vegetation until its prey swims by. For example, the red-bellied piranha and the piraya piranha grow to about 20 inches (51 cm) long, while the black spot piranha grows to about 11 inches (28 cm), according to FishBase. This aggressive behavior is sometimes marked by the acoustic sounds they produce. However, the red-bellied piranha is actually omnivorous. In the lush rainforests of the Amazon basin, as a species the Red-Bellied Piranha can get to 50 cm (20 inches) in length and weigh up to 4 kg (8.8 lb). The nests are about 4 to 5 cm deep, and are dug amongst water grasses, with the eggs attached to the grasses and plant stems. In order to maintain a piranha aquarium, it is important to keep the water quality up, as they are messy eaters, and this will dirty the water in the tank. After just two to three days the eggs will hatch, and the juvenile piranhas will hide in the plants until they are large enough to defend themselves, at which point hiding from predators becomes lurking for prey. recent questions recent answers. MFK Member. The red-bellied piranha, also known as the red piranha (Pygocentrus nattereri), is a species of piranha native to South America, found in the Amazon, Paraguay, Paraná and Essequibo basins, as well as coastal rivers of northeastern Brazil. Breeding occurs over a two-month period during the rainy season, but that can vary by area. In the case of a feeding frenzy, schools of piranha will converge on one large prey individual, and eat it within minutes. When young (under five or size inches) red-belly piranhas all look the same. The fish abdomen color varies from yellowish to reddish, when the rest of the body is silvery, golden or black.The fish head can be of different shape and it notably depends on the fish diet. Red-bellied piranhas grow to be about a foot long. In some parts of its range, it is among the most common fish species. Red-bellied piranhas are found throughout the low elevation regions of the Amazon River basin. These fish have powerful bodies that are high, thick, and laterally compressed. Most species can reach a size of a minimum of 8-10″, however the biggest species (Pygocentrus piraya and Serrasalmus manueli) might mature to as much 24 inches, so a huge tank is an outright need despite what species you mean to keep! The head and body are various shades of gray; their sides are flecked with bright silver scales. The tubifex worms were easier to find. … Smithsonian’s National Zoo & Conservation Biology Institute 3001 Connecticut Ave., NW Washington, DC 20008, PO Box 37012 This design allows piranhas to bite down with incredible force and shearing ability. A good portion of their diet consists of fins nipped from the tails of larger fish. Red-Bellied Piranhas school in the wild for defense and require to be in groups of 6 fish or so to feel safe and secure.  They are omnivorous foragers and feed on insects, worms, crustaceans and fish. I don't even know if they shoal or are solitary. These communal feeders hunt in packs or shoals of up to 30 or more individuals, hiding until they attack their prey. Given time, food, and space to grow, red-bellied piranhas can reach over 15 inches long and weigh up to 7 pounds. The Red Bellied is thus a common Piranha for respectful owners. They inhabit both still and moving sections of the vast fresh-water Amazon River basin system. The most notorious of the species, the Red Belly Piranha (Pygocentrus nattereri) lives in the wild hunting together in schools that can reach into the thousands. 4 red bellies. They can grow to be a little over a foot long (30.5 centimeters) and weigh up to 4 pounds (1.81 kilograms). The red bellied piranha gets to be 12" so yes..the tank is too small. They love beefheart and shrimp, and you should always have feeder fish in the tank so as to keep the nipping to a miniumn if you have more than one. This usually triggers them to come into breeding condition. They max out at … They need 379 liter (100 gallon) tank size. Most people think piranhas only will eat meat, but in the wild they will eat nuts and fruit that fall from nearby trees.