Frequently asked questions

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 Fish

Can fish change their gender?

Hello, this actually occurs in some species, it is mainly known from some marine fish, e.g. several wrasses and the well known clownfish. In case of the latter, all fry are born as...

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Freshwater Fish

Can I keep Dwarf Livebearers (Heterandria formosa) together with Platies and Corydoras?

Hello, there are no objections against small Corydoras (Corydoras habrosus, C. hastatus and C. pygmaeus) −  however, the aquarium should be abundantly planted and provide a thicket...

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Freshwater Fish

Differences between Dwarf Gourami and Honey Gourami (Colisa lalia and Colisa sota/chuna)

Hello, they are two closely related but nevertheless different species: red Dwarf Gouramis are a bred variant of Dwarf Gouramis (Colisa lalia), which in its original form have...

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Freshwater Fish

Discus and Altum angelfish together?

Hello, this is indeed possible with juvenile or half grown fish if you leave out the shrimps (which would otherwise end up as fish food sooner or later). But with the remaining stock...

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Freshwater Fish Care

Do Otocinclus (Midget Sucker Catfish) damage plants?

Hello, no, healthy plant leaves will not be damaged. Only already damaged, softened plant parts will be nibbled at, if at all. In any case, the Midget Sucker Catfish require a...

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