invert stocking

SaltySqueeble

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ISpeakForTheSeas

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I am more on the beginner side of the hobby. Are there any easy to keep sea cucumbers and nudibrachs? I already have a pink urchin
Sea cucumbers, yes - the sand sifting ones are generally easy to keep; the filter feeding ones aren't particularly hard to keep either, but they may require phytoplankton to feed on.

Skip the nudibranchs - they have very specific diets, and pretty much all nudibranchs will starve in our tanks.

For unique inverts, do you care if they're reef-safe or not? I ask because some really cool inverts - like saron shrimp, murex snails, or crown conchs, for example - are not reef-safe.

My thoughts for reef-safe, unique inverts that are sold in the hobby and should be beginner friendly:
-Sand-sifting sea cucumbers
-Pompom crabs
-Giant knobby cerith
-Conch snails (for oddball, I'd particularly recommend a Spider Conch)
-Chitons
-Money Cowries
-Stomatella snails
-Serpent/Brittle stars (*Not the Green Serpent Star, Ophiarachna incrassata, as that one is predatory)
-Fleshy limpets
-Some hermit crabs (like the Hidden Hermit, for example)

Some I would avoid:
-True starfish (Asteroidea - brittle/serpent stars are Ophiuroids, not Asteroids; they're not true starfish)
-Nudibranchs
-Most cowries
-Symbiotic shrimp that you can't provide an appropriate symbiont for (for example, the Curly Que Pistol Shrimp, Alpheus armatus, which pairs with the Corkscrew Anemone, Bartholomea annulata)
 
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krollins

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I already have serpent stars and conchs. I have heard sea cucumbers will release a toxin when they die, killing everything in the tank. I have a reef tank.
 

ISpeakForTheSeas

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I have heard sea cucumbers will release a toxin when they die, killing everything in the tank.
They can - it's very rare, though:
Yeah, I've only heard of a couple of instances where a "cuke nuke" actually took place despite knowing multiple instances of cucumbers ejecting either a toxic fluid, their organs, or their cuvierian tubules, so it's definitely not a common event (at least not with sand sifting species). That said, keep in mind that the toxicity varies from one species to the next, and some species are more toxic in certain ways (some are more toxic when they expel toxins in some way, others contain more toxin in their body wall, etc.), and various circumstances (such as water volume, skimmers, running carbon or not, etc.) about the aquarium they're in can determine how much harm the toxin causes.

Personally, I'd say they generally seem pretty safe, but you need to be aware of the (relatively low) risk and have a plan in place to handle it if things go awry.

The cuke nukings:
An instance of ejecting a fluid (nothing seemed to have been harmed in the tank, but this stuff is reportedly toxic):
 
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krollins

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Are there any really unique shrimp? I am somewhat a shrimp enthusiast and I want to have a collection of unique shrimp. Also are there any reef safe non aggressive reef lobsters?
 

ISpeakForTheSeas

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Are there any really unique shrimp? I am somewhat a shrimp enthusiast and I want to have a collection of unique shrimp. Also are there any reef safe non aggressive reef lobsters?
I'm not sure on the lobsters, but there are plenty of unique shrimp out there - pistol shrimp, bumblebee shrimp, saron shrimp (any shrimp of the Saron genus is going to be a cool shrimp IMO), tiger/bongo shrimp, lots of different cleaner shrimp, sexy shrimp, rock shrimp, green lantern shrimp, a variety of "table" (human food) shrimp (these get large and may or may not eat small inverts - not a lot of people keep them), etc.
 

Jekyl

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I love inverts. I want to stock my 75 gallon with rare, oddball, and strange inverts. Any ideas?
Check out the selection at reefcleaners.org
 

Mr_Knightley

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As far as I know, bongos and harlequins will eat any type of echinoderm, though they prefer true Asteroidea. Anything with tube feet.
I have never kept them (starfish lover) so I cannot speak from experience.
 

ISpeakForTheSeas

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As far as I know, bongos and harlequins will eat any type of echinoderm, though they prefer true Asteroidea. Anything with tube feet.
I have never kept them (starfish lover) so I cannot speak from experience.
I'm not sure with bongo shrimp (there's not a lot of info) but harlequins only eat starfish - there are conflicting reports on them accepting brittle stars when entirely out of other options, but it seems like if they do, it would be an extreme famine food.

I have heard unconfirmed rumors that they may also go for urchin feet on occasion- I find this plausible but extremely unlikely.

From everything I've heard, they don't seem to bother cukes at all, so I'd assume they'd leave them alone too. I haven't heard anything about them and crinoids.

Also, just to clarify for anyone wondering- harlequin shrimp do not just eat the tube feet of these critters, they eat the whole critter, typically starting with the tube feet (presumably to keep the critter from fleeing/struggling while they eat).

Also, related fun fact, despite reports to the contrary, bumblebee shrimp don't eat echinoderms.
 

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