Egeria densa

Anacharis or Brazilian waterweed (Egeria densa, Anacharis is an outdated name of the genus, but in the USA and in Canada it is still used) is one of the oldest and the most renowned aquarium plants.

Egeria densa is a good plant for beginner aquarists, besides its high growth rate it helps easily settle a biological balance in a new tank.

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Archer fish (Toxotidae)

Archer fish (Toxotidae) belongs to ray-finned fishes of monotypic family Toxotidae, that in order to feed spray water in the air or on the ground to shoot down insects and then eat them.

The droplets hit so hard that insects fall into water, where they are quickly eaten by the fish. It seems that the fish faultlessly knows where its prey falls and goes there fast before other fish gets it or it will be carried away by the water flow.

Besides, archer fish similar to silver arovana can jump out of water to catch its prey, though not very high, just at its body length.

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Elephantnose fish (Gnathonemus petersii)

Elephantnose fish or Peters’ elephant-nose fish (Gnathonemus petersii) is a freshwater fish species of Mormyridae family. The fish got its specific name in honor of German zoologist Wilhelm Peters (1815—1883).

It looks quite unusual due to construction of its mouth that is a trunk-like and resembles elephant’s nose. This fish species requires special tank conditions and therefore it’s not recommended for beginner aquarists.

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