Predatory fish are very aggressive; They can even eat smaller individuals of their own species. Many and them have sharp spikes, which can be connected to a purse containing poison. Sometimes the mucus covering the skin of the fish is also toxic; After touching, it can cause a rash, and even cause, that the fish will be poisonous, until the skin is pulled out of it.
Pike (Esox)
There are various pike species in the world. American pike may grow up to 1 meter. He likes calm, Clean waters with a lot of vegetation. Occurs in rivers and streams flowing into the Atlantic. Has sharp teeth.
Sum (Tandanus)
It belongs to the Sumatic Family. Lives in the calm waters of Australia and South- Eastern Asia and the entire Indo-Pacific region. Other fish from this family are found all over the world. Dorsal fins and pectoral fins can be ended with sharp spikes, often containing venom. Their skin is covered with poisonous mucus.
Sum (Ictalurus)
This fish has poisonous spikes, and her skin is covered with toxic mucus. So be careful, Always remove the skin from it before eating. These sums feed mainly on plant food and insects, preying at peaceful bottom, slow flowing streams, Especially in North America and Europe. This is a kind of sum, which has a typical mustache for this family.
Perch (Lose fluviatilis)
Voracious predator, moving all pads. These fish can seriously reduce the populations of other fish in the tank, in which they will be. Making in calm rivers and streams in Asia, Europe, North America and Australia. It is tasty, However, you have to watch out for a sharp dorsal fin.
Pike (Esox Lucius)
He lives alone. He is very aggressive and has sharp teeth. Some call him “river wolf ", Because it sow havoc among fish; can even fight with individuals of his own size. His meat is very tasty. Occurs in Europe and North America in various waters.
Zander (Stizostedion lucioperca)
Resembles its close relatives, perch and pike. Has great, eyes glowing in the dark. Occurs mainly in North America; His meat is tasty. Has a sharp dorsal fin.
Many edible freshwater fish can hurt with sharp teeth or spikes of dorsal fins, others have leather covered with toxic mucus. Piranha is notorious (Serrasalmus), Mean in the tropical regions of South America; Dangerous and voracious fish. South America is also inhabited by electric eels (Electrophorus electricus), which can cause a wading or flowing person a strong electric shock.
Dead fish start to break very quickly; they must be dried immediately after catching, Surrounded or marinated. Don't eat any fish, which you did not catch yourself, Even if it seemed very fresh.
