Hello LovinlifeinGuam,
Yes! I am trying to figure out how to take care of nudibranchs in aquariums.
I saw that Blue Velvet Nudibranchs are sold by LiveAquaria and assumed they were suitable for aquariums.
Are they not able to be kept in home aquariums?
If you have any good resources or care guides for nudibranchs—please do let me know.
I am confident in my ability to keep stable parameters and ensure they have enough space—but am immensely weary that they may run out of food.
If anyone here keeps Blue Velvet Nudibranchs—please do let me know! I would be interested to hear how you keep them well fed.
—Best
I'm late here, but yeah, while nudibranchs are amazing critters, they - and some other sea slugs, like the inaccurately named Blue Velvet Nudibranch (which is actually a headshield slug,
Cheilodonura varians) - are not suitable for aquariums at this point in time due to their
incredibly restricted diets (with some species eating literally just one species of prey, and most only eating a handful). If the species you offer them isn't right, there is a very good chance they won't eat it, and will just end up starving.
Pretty much all nudibranchs starve in our tanks (exceptions for Berghia nudibranchs, which eat "pest" anemones and are usually promptly given to another hobbyist when they finish eating all available nems in a tank) - they really shouldn't be sold to anyone except researchers at this point.
That said, if you really want to keep a Blue Velvet Slug, I would find a bunch of hobbyists with Ghost Flatworms and buy the flatworms from them to culture in "farm" tanks, and I would ensure you can get a steady, large population of those (keeping track to the best of your abilities of things like how fast they reproduce, about how many larvae are produced and survive each time, etc.) - then I would buy one Blue Velvet and offer it one flatworm at a time until it reaches satiation and stops eating each day for at least three days (I'd probably suggest doing so for at least a week); that would give you a ballpark estimate for how many flatworms it would need daily. Once you know your farm's flatworm production capabilities and approximately how many flatworms are needed daily to support one adult Blue Velvet Slug, then you can figure out how many (if any) you can responsibly keep and feed at one time.