I've read some of the comments below and find them misleading.  Young man, the amount of sand is perfect.  Crayfish LOVE to burrow.  I might even add a little layer of muddy substrate under the sand, although it makes it more difficult to maintain aesthetically acceptable water quality.  Trust me, the crayfish won't care.  Keep the water clean enough to see through, but not crystalline; they don't live in nature that way.  Add a tablet of calcium/magnesium every month or so to make it easier for them to molt.  They live where there is a lot of dead wood and tannins in the water and don't care/even like/this type of environment.  They are omnivores and will eat almost anything as long as it can be broken down into small particles: algae wafers, shrimp pellets, dried worm pellets.  Of course, living things like Walter worms and even small fish are on their menu.  I dislike the way some aquarists starve them into going crazy after a live goldfish, for example.  They will wear themselves out trying to catch a live fish and then can't eat easily.  They have to break it apart tiny piece by tiny piece and sometimes drag it into a hide or cave to rot so it is easier to eat.  They don't have crushing teeth or strong jaws.  If tank bred, they will almost never attempt escape, but if wild caught, they will escape every time, trying to "go back home."  When one is determined to escape, I take him back "home" and release him.  They are territorial and build borders between themselves and tankmates to keep the peace.  Don't crowd them.   I've raised these fascinating creatures for 50 years and still don't know everything about them, but the advice above might help you enjoy them even more.

I'll add this:  I've kept crayfish in community tanks for many years.  I start them in the tank as hatchlings whenever possible, that way, they home in on the tank and don't usually feel compelled to leave.  I keep them well fed on algae wafers, shrimp pellets, and dried worm tablets as well as the occasional boiled or crushed vegetable or salad shrimp.   They have never bothered the community fish in the tank when well fed.  The bigger the tank, the better.  I use anything above 40 gallons with best results.

crayfish are omnivores

they are omnivores not herbivores

4:40 little man just bossed the bigger guy out of that hiding spot lol

Your voice is so smooth and soothing LOOOL fallin asleep

Thanks for this I'm getting  this for my girls and need to know what I have to put in the tank

Crawdaddies are such majestic creatures

aquariums  design can be beautiful  art, the sand level is perfect..

You’re lucky if your crayfish prefers veggies.  I find they all have different preferences and personalities.  I’ve had crayfish that were shy and didn’t eat the fish, and crayfish on the other side of the spectrum who were extremely predatory tried to catch and eat fish at every opportunity.

Thanks for the tutorial pal! My mother brought home a cray fish from a pond of which they were just gonna kill all the ones in there anyways so I'm gonna make him/her a nice home, I have named them lobster as I am bad at naming.

Beautiful setup and cute crayfish :D

I gave a thumbs up because you called it a cheeky thumbs up and that made me laugh

Excellent Job.Your a great educator-----Thank you very much-Bill Petillo

Very professional video 👏🏿

Technically they are omnivores... they ate my fish. My friend had one crayfish and it ate all the Angelfish they had in a 50 gallon.

Thankyou so much for sharing your knowledge..

i have 4 different types of crayfish with gravel, they have made themselves at home easily with some fish  added.

I'm thinking about starting a crayfish tank. Thanx for this info.

When you were putting the fish inside tank it looked like you were dumping your sushi in a fish tank