Saturday, December 15, 2007

Crayfish grows

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IMGP5116 Today when I saw the crayfish looks some weird to me. It’s bigger now as it moult last night. The exoskeleton was lying looking like a dead crayfish. It is amazing how this animals grows.

If I turn the light on it blinks the eyes. For today it will be better with the light off.


Sunday, December 9, 2007

Crayfish attack angelfish

The blue crayfish seems to contaminate the water a lot. The water in the 20 gallon tank was unclear and smells. One factor that may be important is that we removed from that tank a plecostomus and 3 corydoras, which help to clean.

We thought days ago to separate it due it violent behavior. We got gravel (white) and some stones to suit the crayfish in the small 10 gallon tank. I was thinking to do that tomorrow but this night I heard a splash and when I look at the 20 gallon tank the crayfish had a angel fish grabbed from the dorsal fin (upside down), as the fish tried to escape the lobster tear all it fin, the fish swim away dizzy, staying in a odd position for a while. It probably was half sleep as the crayfish try to get it. I turn on the light and feed them to make them go to the surface.

I set up the small aquarium right away and now I’m finishing of clean the 20 gallon tank. Tomorrow pictures.

Sunday, December 2, 2007

Blue Crayfish in 20 gallon tank

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After putting the crayfish in the 20 gallon (80 Lt) tank the crayfish was behaving for few days. They angelfish laid eggs on a leaf. Sadly I wasn’t prepared to breed those so I let them go. 80% of the eggs spawn and a little tale could be seen moving on each eggs.

The crayfish then start removing some plants, the ones I just put last week, that have weak roots. And making holes everywhere. The water also is getting dirtier that with the other fish. The absence of the Plecostomus has all the plants growing algae on it.

The Blue Crayfish don’t attack the angelfish at all. But I will have to remove it because is damaging the tank.

In a 10 gallon (40 Lt) with just stones it will be better. I may consider to add some cichlids. I have read that they do well. (Anglefish are cichlids too)