Collapsed fins on fry

This question comes up a number of times. Why, and what to do when, your fry has collapsed fins?

In our experience, there are a number of reasons for the collapsed fins, and if you treat it sooner, usually your fry will recover without any apparent damage.

The solutions depend on the reasons and could be any of these:

• water too cold - bettas are tropical fish, make sure you have water temperature around 20-25C at least.
• water too hot - don't boil your bettas. any water temperature above 28C is not good.
• overcrowded - your fry won't like it when you try to cramp too many fish in a single tank
• mixing with more active fish - if you mix your fry with other fish which are either larger or more active (e.g. move too fast), they'll get scared easily and tend to collapse their fins
• too much disturbance - did you turn that air pump too strong? slow it down or turn it off! Don't turn on the lights 24/7, fry need to sleep too, u know!
  

Hope we don't forget other things, but if we do, let us know so we can include it to the above.

Happy caring for your fry