WHAT WOULD BE A GOOD DIURNAL LARGE OCTO FOR A 500 GALLON TANK. LOOKING FOR A HARDY SPECIES OR ANY THAT CAN BE KEPT TOGETHER EVEN THOUGH I HAVE A FEELING THATS NOT AN OPTION. OPEN TO ANY SUGGESTIONS

Octopus cyanea without a doubt is what I'd get! Keep singly!

other than that perhaps a 500 gal tank would be okay for 3 or 4 Eledone or Octopus bimaculoides, they can co-habit but only in big tanks.

:welcome: to TONMO.coom Scottwcs.

You've got a really big tank there, I wonder how you're gonna find those little bimacs in such a big tank. But If you're looking to keep only 1, then like what Colin said, O.cyanea would be best.

You'll probably know this but you can get captive bred O.bimaculoides from www.fishsupply.com :)

i take it that u cant get captive bred O. cyenea?

Nope, they are a small egg species therfore the paralarvae are very difficult to rear, not impossible just not viable as a captive breeding project yet.

cyanea only lives for 12-18 months at the best so i still looking

Most smaller octos only live about that long. :(

12 - 18 is considered good for an octo...

your alternative is a coldwter species that may live as long as 5 years.. GPO, bathypolypus, eledone etc

yea, but the temperature required for those is very low and a chiller is a must.

yes.. eledone at least below 15 deg C

I wonder if you could go with cuttles...a little herd of them (is that the correct grouping name???) would be nice in a 500...
Greg

I believe we had a thread on collective terms for cephs... cuddle of cuttlefish :)