Malta Aquarist Society

 They are really growing fast. I'm feeding them Nishikoi sinking pellets and Tropical wafers ( colour). I have about twenty of them.

Very nice & really a cute little Crayfish.

You can also try other types of food, like crushed snails but the Nishikoi products are quite good, especially the growth one, for raising the fish fry. You can try it on the Crayfish as well, as it sinks easily.

Well Done my friend.

 Today I transferred my small crayfish into a  2ft tank on their own to have space. I added plants and apple snail shells to have hiding places. There are some that are double the size of the others. I counted thirty as I caught them one by one. I also searched on the net and I came to a conclusion that they are Procambarus alleni ( Electric blue colour), because there are other colour forms such as white.

Well Done Jon. I hope that you post some pictures, so we can all see the beauty of these little, Procambarus alleni.

7 weeks old crayfish. Compare its size to the previous photo in this thread.

Thanks for the update Jon. They are growing really fast & they look lovely.

well done jan...

Sihbi kien ha min dawk li kont hat int, il problema li kellu kienet li ma kellux spazju ax jekk izhomhom saparati ahjar ax jigildu...u bekk konna tlifna amont ta crayfish... jekk andek spazju ifred kemm tista li konna amilan fridna sizes

 GL

 These aren't aggressive as the Procambarus quadricirinatus which you gave me. 

I like feeding these small ones because I calculate a granule for each crayfish, and every crayfish will be having one between its hands. They fight for food....

how can they be identified male/female?

True Big Brother. This photo shows the biggest and smallest of my brood.

Big Brother compared to a €0.50 coin. I think he ate some of his sisters and brothers... as I didn't find them all   He's a male for sure.

 As to answer Jazz's question I wished I had a few photos but I will explain the difference..

So I'm going to talk about this type of crayfish the Procombarus alleni.. 

1. The male has longer and thinner claws then the female. 

2. Crayfish walk on four pairs of legs that are on its thorax. These legs, plus the pair of claws, are called thoracic walking legs. In mature male crayfish, there is a gonopore (a small opening through which gametes are released to the outside of the body) at the base of the 5th pair of walking legs. (The 5th pair of legs is at the are at the back. In a female crayfish, the gonopore is located at the base of the 3rd pair of walking legs. The gonopores are a bit small and sometimes the same colour of the crayfish. They are like two spots. To see them you have to turn the crayfish in your hand.

Interesting thread John and thanks for sharing the info
 

What is the size of the tank that you breed those crayfish and can you send me a pm were can I buy a good quality of crayfish?I have a crayfish but I don't now what species it is. I bought it a year ago.

 You can post a photo of your Crayfish, maybe we can identify it. For breeding these crayfish mentioned above I only had them in a 45cm aquarium because they were small.

It's not that easy to breed crayfish because when I have two crayfish together I always end up with one, because they kill each other.