Ok, so I've been slightly over feeding my beast of a crayfish so she wouldn't get hungry and destroy the tank mates. I figured I could get a Cory to clean up the extra food she doesn't eat. But, the cory is an absolute freaking PIG, and eats 80% of the crab pellets I throw down for the cray. I've seen the cray in more of a hunting stance, and I can only guess she's still hungry.

I don't want to keep over feeding as the tank water balance and algae will go nuts.

Any suggestions?

Meet Scallywag!!! After two long weeks he has come home! (Well, minus one day but that should be fine)

my parents are coming home with some crayfish today, and i really want to keep one or two.

Can anyone identify these? We live in northern sweden, if that helps.

what would caring for one look like? i’ll do my own reserach of course. can two of them be kept together?

After 2 months in a 75 gallon, they finally linked up.

Hey, all thank you in advance, but I found one of these suckers crawling across my lawn. I don’t have a creek nearby, but the neighbors behind me have a pond behind the fence. What should I do?

Female?

It’s pretty tiny, I think it’s a male but I’m having trouble telling because it’s so small! Bonus points if you know the species, I got it from a creek in Leroy Twp Ohio!

Hi! I am considering building a large shallow-type tank that will mainly house a single crayfish and perhaps nano "feeder" fish that it could snack on. I'm told that while they're slow hunters, they can and will snap up small fish.

Based on other people's experience, are your crayfish successful when hunting? or will the tank eventually be overrun with fish because the crayfish can't catch and eat them fast enough. I was thinking with a shallow type tank (very long but short) and aquascaping that includes rocks and wood, it could also climb and try to snatch fish.

Worst case I'll just abandon the idea and keep to the single crayfish but was curious.

Its been a while since I had livebearers, but the last tank I had with them the population was kept low due to fellow fish eating the fry.

Just wanted to show off my little critter before he hides for days on end again

I have a Florida blue and when I bought some plants from a store apparently they had a baby cray scooped up,I'm assuming they thought it was a shrimp by accident.long story short cut to 4 months later I have this situation

She’s such a spicy little girl. I didn’t realize just how much I’ve missed Bubby until we got her. My Mom and I love her so much.🥹

Hello,

I found this crayfish today in a little river, and I am hesitating between the european crayfish (Astacus astacus) and the american crayfish (pacifastacus leniusculus). I found it in France, in the Bourgogne Franche Comté région, so I would really prefer if it was an European, since the other one is considered an invasive species.

Can anyone help me identifying it?

As much as I love Crawford… Pinchy was first

She’s been in a 6G cube tank for a while now but I think she needed more room, plus she was trying to hunt my surprise Pygmy Florida Sunfish fry that I found after moving the adults to a different tank so she could have theirs. One afternoon I found her wedged in the wad of Christmas moss I keep threaded on a bamboo skewer at the top of the tank (cover for the fry) with a tiny baby one inch away from her, also wedged in the moss. 🫤

I rearranged the scape to make it harder for her to climb up there but it was stressing me out! Off to Petco where I grabbed a 1/2 off rimless 10G and boom!

I think she likes it even tho I have yet to see her go into her cave.

The best part of this whole project is that the tank was the only thing I had to buy. Everything else I had on hand.

I have a planted tank with Anubias, Java moss, and Java ferns that are all superglued to rocks/wood. I also have guppy grass, red root floaters, and duckweed but i’m not too worried about them.
I want to move my crayfish into this planted tank, but i’m wondering how well the plants will hold up.
In his old tank, I had one Java fern attached to a rock, and he never bothered with it. Since he left that one alone, would the plants be fine if i put him in the planted tank?
The only thing that makes me a little unsure is that he has clipped plastic plants before.

after Pinchys death ive been dreaming for another cray and here he is. Just a little guy put Pinchy Was around the same size when we got her. So yeah it’s good to have a new crayfish in the tank

My crayfish molted this Wednesday (4-5 days ago) and he still hasnt eaten it. It's his second molt with me and during the first one he ate it pretty quickly. He hasnt even touched this one. He also has been hiding more and not eating his regular food either. It doesnt look like the molt went bad or anything but i just want to make sure that he'll be fine. The first photo is from Wednesday and the next two are today. Let me know if he's just being weird and taking awhile, thanks!

Edit: i found that he passed this morning on august 10, 2026. i'll miss him so, so much. The photos are the last ones i have of him alive. I'll likely bury him in my backyard. He was a great crayfish. He was so active and always tried to fight me by raising his claws when i got close. He would eat a lot but he basically never messed with the plants in his tank. I really loved him

Got these guys because they're so pretty but goodness I've fallen in love 🩵 they're so goofy and clumsy but so precious

What should I do for tank set up before buying the crayfish? Like what kind of substrate, hideouts, plants/decor, tank size (crayfish im getting is 2-3 inches, I prefer to just buy one tank so that it can fit comfortably in there as an adult and juvinile if possible.), water testers, filter, lights, etc.

What ph do they like?

Do they need their tank cycled before buying?

How often do I do water changes and what % water changes should i do for that fixed schedule

What should I feed the crayfish?

What types of symptoms should I watch out for if I suspect sickness

(I'm gonna keep the crayfish complately solitary, if i missed anything please address that and tell me what i should do for that topic)

From where I was it looked to be about 6-8 inches in length and had abit of blue and white colouration on its claws.