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Fish diseases in the aquarium. - Amtra

Fish diseases in the aquarium. - Amtra

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F<strong>in</strong> damage, clamped f<strong>in</strong>s, etc.<br />

Symptom 1:<br />

F<strong>in</strong> erosion, f<strong>in</strong> damage, clamped f<strong>in</strong>s.<br />

Angelfish (Pterophyllum scalare) (above) and guppy (Poecilia reticulata) (below) with<br />

clamped dorsal f<strong>in</strong> and a high degree of erosion of <strong>the</strong> caudal f<strong>in</strong>, typical of bacterial<br />

and/or parasitic <strong>in</strong>fection.<br />

Cl<strong>in</strong>ical picture: The f<strong>in</strong>s of most fishes consist of very th<strong>in</strong><br />

membranes, amply supplied with blood-vessels, supported by <strong>the</strong><br />

f<strong>in</strong> skeleton. Numerous pathogens choose to attack <strong>the</strong>se areas.<br />

The result is easily recognisable damage visible as splits <strong>in</strong> <strong>the</strong><br />

membrane and/or superficial cloud<strong>in</strong>g of <strong>the</strong> f<strong>in</strong> edges. These<br />

symptoms are most evident <strong>in</strong> <strong>the</strong> dorsal and caudal f<strong>in</strong>s.<br />

Cause: The commonest causative organisms are bacteria, but<br />

unicellular parasites, especially Ichthyobodo necatrix (Costia), and<br />

sk<strong>in</strong> flukes may parasitise <strong>the</strong> f<strong>in</strong>s and lead to f<strong>in</strong> erosion.<br />

Treatment: Treatment should be achieved us<strong>in</strong>g amtra medic 3<br />

which specifically combats external bacteria and sk<strong>in</strong> flukes. It is<br />

possible to use amtra medic 4 simultaneously or subsequently to<br />

elim<strong>in</strong>ate any possible Costia <strong>in</strong>festation. In cases where fungal<br />

<strong>in</strong>fection has spread to <strong>the</strong> f<strong>in</strong> base <strong>the</strong>n subsequent additional<br />

treatment with amtra medic 2 is recommended.<br />

Prevention: Because <strong>the</strong> delicate f<strong>in</strong> membranes are particularly<br />

sensitive to unsuitable water conditions, <strong>the</strong> latter should be tested<br />

regularly. A sudden drop <strong>in</strong> pH and high levels of metabolic waste<br />

products (such as ammonia and nitrite) are particularly harmful.<br />

It is recommended that <strong>the</strong>se problems are prevented by regular<br />

use of amtra pH-constant to stabilise <strong>the</strong> pH of soft water, and<br />

amtra clean to accelerate detoxification of ammonia and nitrite<br />

<strong>in</strong> all aquaria.<br />

6 7<br />

F<strong>in</strong> damage, clamped f<strong>in</strong>s, etc.

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