Frequently asked questions

Freshwater Fish

Trigonostigma (formerly: Rasbora) espei are courting

Hello, Concerning "spawn":this indeed sounds as if there will be offspring soon! Concerning "water parameters":the water should be soft and slightly acidic, peat filtration is...

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Freshwater Fish

A few questions about Spot Finned Spiny Eels (Macrognathus aculeatus)

Hello, Concerning "pair-housed":there are no objections in an appropriately large [above 300 liters (66 US gal.)] and well structured aquarium with plenty of hideaways near the...

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Freshwater

Biological activation delayed by filter "cleaning"

Hello, please be patient - the filter 'cleaning' unfortunately has delayed the biological activation process considerably. Just do not do anything at all at the moment (except adding...

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Freshwater Fish

Black Ghost Knifefish (Apteronotus albifrons) in a community tank? / Fish as gifts?

Hello, Concering "keeping":this will not be possible in the long run, since knifefish are rather greedy predators. Concerning "eat smaller fish":this will certainly happen! However,...

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Freshwater Fish

Black Widow Tetras (Gymnocorymbus ternetzi) spawned

Hello, Concerning "spawn mold":It is also possible that the eggs were not or only partially fertilized. Unfertilized eggs quickly fall apart and become moldy, mold can then also...

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Freshwater Care

Blue-green algae / Cyanobacteria

Hello, Blue-green "algae" (more precisely: cyanobacteria, because they are actually not real algae but rather bacteria that are able to perform biosynthesis) unfortunately may be...

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