Wow, I had no idea keeping crustaceans in fishtanks is not allowed in Norway.
Here is what my fishtank (112 liter) looked like (at one point - I had to "reconstruct" the lay-out quite often because of Claude´s digging spree):
And this is Claude himself:
He is the red-claw crayfish (Cherax Quadricarinatus) but I have kept some other crustacean species too.
And yeah, we also call those fish just tetras ;) I used to have a few species of them too.
Would you mind showing me a photo of your tank? :)
That looks nice! And what a cool crayfish. I can see why you would want to keep these :) Do you typically just keep a single crayfish in a tank, or can you keep several together?
Here's my tank. It's also a 112L tank. It's currently facing some problems with algae after my 2-year old kid began feeding them by himself!
Wow, I like that! Simple but beautiful :) I can see some very familiar fish species there too :)
As for the crayfish - I usually try to keep a pair but for some reason, there is a way more males than females in most crayfish species so I often ended up having males only. It takes a few months before you can determine the sex. Also, once the males get big enough to hurt one another, they start engaging in pretty brutal fights so it is not recommended to keep more than one male in one tank. But I love them. I have had several different species and they are all fun to watch. A few weeks ago, I posted a video footage of one of my crayfish molting on Dlive :) Crustacean molting is a very interesting thing to watch too.
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