guppy;616952; said:
As for spiney eels, I disagree that a 3" would be max for a 10g, it has been a while since I have had one but aren't they usually 10"x12"x20", or close to that. The spineys are almost as tolerant of smaller length/width tanks as true eels. I think that a single peacock (Macronathus aculeptus)or one stripe eel (M. siamensis), or even a zebra spiney (M. zebrinus) could be kept in a 10g until between 8" and 10", keep them with a few very small (cheap) tetras or guppies and replace the small fish every couple of weeks (you will need to).
My intial remark was pertaining to a 3" or smaller (<) juvenile as being acceptable for a 10gal.
Average size for most Spiney Eels in aquaria is 6"- 18" and they max at 14"-40" in the wild depending on the variety...
Always assume they will exceed the average for aquaria
IIRC, the Fire Eel is the largest maxing at 40".
While they can be fairly shy and sedentary during the day, a 20-55gal with lots of hidey-holes and cover will draw them out a little more during daylight.
They need room to forage at night, the confines of a 10gal just doesn't cut the mustard IMHO.
I'm kind'a conservative on minimum tank sizes/stocking levels, and IMHO a 10gal is just insufficient for any but small juveniles (3"<).
When I recommend a tank setup it is for adult size...
Research your species, get the tank/filtration etc and then get the critter.
This saves the average fishkeeper money in the long run if they're not a total fishfreek like many of us with tanks/gear just waiting for use around the house/garage.