ÀWhat are piranhas? Description

The piraña the serrasalmus, They are freshwater fish belonging to the family of the characids. Is one of the most notorious fish there, for his aggressive temperament and incredibly sharp teeth that cut everything Biting. If we take a piranha, It may seem a € |nada inofensivoâ fish can make us suspect that this is a very aggressive fish. In wild nature, the biggest risk is that often move in large groups, attacking prey in coordination with an insatiable appetite. No matter what they have eaten so far, if you have the opportunity to continue eating they will, without a doubt.

Morphology. Features Piranhas

There are several species of piranha, only a few are often held in aquarium, how the red piranha. The main features of the piranhas are:

Size

Piranha It is a large fish that can measure between 25 Y 30 centimeters. On freedom, some specimens can reach up to forty or 50 centimeters. It is characterized by its thick head, endowed with a prominent lower jaw and triangular teeth, very keen to give a frightening and dangerous image.

Coloration

Depending on the variety Piranha, You may have a different coloration. We can find piranhas in red or silver colors, It is the ventral part of the body in yellow or orange shades. some varieties, like red piranha, coloration varies as you age. Juveniles are silver with black spots all over her body, which disappear as they age. In step remaining life of, silvery tone is darker twister and begins to have a reddish and bluish green hue-yo.

Sexual dimorphism

Dimorphism or physical difference between male and female is not very marked, but clearly. They are distinguished males have a thicker head and solid, females instead are recognized as having a more rounded body.

Types of Piranhas

Although when we talk about piranhas, we refer to the genus Serrasalmus (being the most extended), There are several kinds of piranha:

The two most known are the black piranha piranha and piranha piranha red or red belly.

HOW TO FIND live piranhas? Distribution and habitat

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The piranhas They originate in the rivers of South America. Depending on the varieties, we can find in some other rivers, being known the Amazon and Orinoco, with its various tributaries. As for countries, the piranhas the freedom we see in Brazil, Ecuador, Peru, Bolivia and Colombia. They live mainly in large river channels, and in some lakes or ponds where there is good vegetation that serves as a refuge piranhas.

As live piranhas

Life expectancy Piranhas depend on several factors, including the species and environmental problems are. curiously, free red piranha (one of the most common in aquarium) usually live about 5 years, while in aquarium specimens they are known to have been able to live up 30 years.

Aquarium conditions

Piranha aquarium need good sized aquarium, about 350 liters. As for the quality of the water, You must be moved in the following parameters:

The aquarium should be formed by a sandy bottom, with a good vegetation and enough places to hide. They are fish that do not like strong lighting.

ÀWhat diet eating piranhas?

The piranhas They are carnivorous fish. In the aquarium should be fed with fish, invertebrates and insects good size. Fish that serve them food must be put, to prevent them from passing any kind of disease piranhas. In the aquarium also You can provide them good quality dry food, especially suitable for carnivorous fish. We must avoid using meat from mammals and birds, by possessing lipid piranha can not metabolize, and that eventually would cause the piranha fall ill.

Behavior

The piranhas fish are quite aggressive and unsociable with other species. Their behavior is hostile and territorial. further, They are famous for their aggressiveness and attacking speed, so they are known as killer piranha. Their interaction with other species is difficult, even if if they are not hungry they could accept other members of their species in the aquarium, provided that the latter are not weak or sick. Natural state is common to hear about his aggressive behavior, even many cases have been reported Piranhas attack bathers especially in cities like Rosario in Argentina. So common, piranhas do not attack humans, except red-bellied piranha and black piranha, which they can reach attack if they perceive the presence of blood or excessive movement in the water.

Compatible with piranha fish

With certain reservations and depending on the personality of the fish, Piranhas can be compatible with:

Reproduction

Captive breeding of the fish piranha is very difficult, but possible. a fairly large aquarium is required with a capacity of approximately 300 liters or more. The male looking for a place in the bottom of the aquarium, where digging a hole to lay eggs. The female spawns night, and can lay between 1.000 Y 5.000 some eggs 2 mm diameter, yellowish coloration. It is known to be the time of spawning, by the very dark blue hue, They are acquiring almost black fish. The eggs hatch in 36 a forty hours. The male is protecting eggs. If the eggs are extracted from the aquarium, the male will make the start with another female of the group. Small piranhas begin to swim freely after six or seven days. Thereafter, we feed them bloodworms and chunks of meat, fish or shrimp until they are ready and start eating other fish to feed, until they reach their adult size.

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