I thought octopuses had the fastest metabolism, until I saw my Crayzilla!

[Octavarium]

My neon red crayfish was sold in store as 99 cent "fire red lobster". I got him in my 60g planted, and as a baby he was the same size as my DAWRF CPO (Mexican orange dwarf which won't grow anymore, I love that little guy). Suffice to say this guy has TRIPLED in size in around 5 weeks, he munches on algae wafers, live worms, flakes, live plants, and leftovers...he just eats and molts every day I feel like! Anyone have any super fast growing crays like this, I guess its a healthy sign obviously. Soon i am going to have to move him to my spare 20g, althought he hasn't bothered ANY fish or the other dwarf CPO, I just don't know how long that will last. Pretty amazing the metabolism of some animals though isn't it. Wish I knew and took day by day picture diary of him.

 

[tanker]

I have a son like that.

 

[Octavarium]

I have a son like that.

LOL. I'd love to see your weekly grocery bill!

 

[Octavarium]

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Bottom pic shows my lil CPO dwarf on the bottom of screen, suffice to say my neon red cray was smaller than him month ago!!!!

 

[Kaliska]

Pretty normal. Put them in a tropical tank and feed them a lot (they can eat a LOT) and they will grow like crazy to a certain point. Eventually after reaching breeding size the growth and shedding slows down. There are several species of crayfish in the hobby that will reach various sizes. I took in this red female that is probably the length of my hand before claws lol I also have some young devil crayfish which are stocky things that get huge, thick claws eventually. It seems like I am always sucking crayfish waste off the bottom of the tanks from all they eat.