Frequently asked questions

Freshwater Fish

Is it possible that Ancistrus catfish attach themselves to other fish?

Hello, yes, this is actually possible. Some loricariids tend to attach themselves to other fish occasionally, which may lead to skin damages. Keeping tropical fish and goldfish...

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...

Freshwater Technical equipment

Can sera fluorescent tubes be dimmed, and what do I have to consider?

Hello, the sera fluorescent tubes can indeed be dimmed (e.g. for sunrise or sunset simulation). This requires operation with an electronic ballast. The tubes must be burnt in for 100...

Freshwater Fish

Do different Corydoras species cross-breed?

Hello, there have indeed been reports about hybridizations of that kind. It is therefore advisable to keep just one Corydoras species per aquarium as to maintain pure species. If...

Freshwater Invertebrates

Keeping Spinycheek Crayfish (Orconectes limosus)

Hello, Concerning "plants":sooner or later this will most likely turn out to be "take them apart" and at least partly "eat them"! Concerning "food":the crayfish will literally eat...

Freshwater Care

Problems with newly added plants / Questions about fertilizer dosage

Hello, Concerning "leaves become pale and thin":What kinds of plants are they? It is absolutely normal that the leaves of swamp plants such as Echinodorus or Anubias species dissolve...

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