Yes. I have a five gallon tank with two goldfish and a blue crayfish and they have lived happily for several months. Granted, the crayfish may snap at the goldfish, but if you choose fast goldfish they should be fine.
The easiest way to feed crayfish is to feed them sinking pellets or wafers, most people would use a combination of some plant matter and some meat. I would recommend an algae wafer and shrimp pellets, both available online from www.bigalsonline.com for a good price. I've attached links to the products.
It depends on the type of fish and their personalities and the same with the crayfish. If your fish are large, there's a lot less chance of him catching them. Neons will disappear rapidly for instance. Some crayfish are more timid than others, but you're obviously going to be taking a chance as they love to eat fish. Crayfish and danios work well as they're far too fast to be caught! This is from personal experience.
Fast swimming moderate-size (3-4 in) fish that can out swim crawfish
It would eat the entire fish!!!
No the Crawdad will probably hurt your goldfish.
No, goldfish should only live with goldfish with the exception of weather loaches or bristlenose Plecostomus, but this is only if you have a large enough tank to care for them.
Yes, they will be like brothers.
NO
A goldfish can live in an opaque glass tank as long as you keep up with necessary water changes. Like a small outside garden pond goldfish are only viewed from the top.
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an aquarium or a fish tank
Rule of thumb is to not mix tropical fish and goldfish.
No. A 10 gallon tank is barely big enough to keep a single goldfish in.
Yes, there are several species of freshwater crayfish available in the pet trade. A single crayfish can be kept in a 10-15 gallon or larger tank.
No; goldfish have bilateral symmetry.
no they need at least five gallons each. a thirty gallon tank is a good size tank to keep goldfish in.
Crayfish of the same sex are incredibly prone to fighting since they are very territorial animals. If you have a large tank with plenty of hiding places, it is possible that the two can coexist peacefully.
Most people would keep goldfish in a bowl or tank, filled with water. You can always add scenery such as pebbles plants and castles :D
i have a turtle by himself and i want to put it with the crayfish because the crayfish is eating my goldfish is that a good idea
Very large peaceful fish. i would sugguest tinfoil barbs.