Pix & ID: Critters that come in your rocks: the good and the bad.

[StangLvr78]

thank you. it's a nassarius snail.

[cloak]

If you haven't already, you might want to post that picture in the Other Invertebrates Forum. There's a few people there who are very good a identifying things for people. While it does look kind of like a nassarius snail, whelks are not that far off as far as appearance goes. It would suck to have this predatory snail roaming throughout your tank. (eating the good things)

[StangLvr78]

does anyone know what this spikey stuff is?

[clk17]

uploadfromtaptalk1411678417749.jpg
uploadfromtaptalk1411678429157.jpg


Anybody know what that thingy is?
Came on my rock, looks funky but kinda ugly lol

[StangLvr78]

I know these are a good sign but what are they? I'm sure there are 500 otherr posts with the same thing and same question so i will thank you in advance for helping me out. (it's the teeny tiny white thing)

[ReeferKimberly]

Originally Posted by clk17

Attachment 292145
Attachment 292146


Anybody know what that thingy is?
Came on my rock, looks funky but kinda ugly lol

Not 100% sure what I am looking for, but maybe a chiton? They are harmless algae grazers.

[ReeferKimberly]

Originally Posted by StangLvr78

I know these are a good sign but what are they? I'm sure there are 500 otherr posts with the same thing and same question so i will thank you in advance for helping me out. (it's the teeny tiny white thing)

The spiral shells? Spirorbid worms. Normal and harmless filter feeders

[StangLvr78]

Originally Posted by ReeferKimberly

The spiral shells? Spirorbid worms. Normal and harmless filter feeders

not the spirorbids the little clear/white thing...thank you for the quick reply...it's between and to the top left of the spirorbids

[Troio2]

Bristle worm I think? Best pic I could get before he went back into the rocks. I've heard some are good and some are bad?

[paperdesk]

I got this nerite as part of a cleanup crew from a seller in Florida. It has a barnacle and just noticed that it also has a little colony of what may be digitate hydroids. What do you think? I like the barnacle but not sure about the other creatures.uploadfromtaptalk1411852635677.jpg

[paperdesk]

Originally Posted by paperdesk

I got this nerite as part of a cleanup crew from a seller in Florida. It has a barnacle and just noticed that it also has a little colony of what may be digitate hydroids. What do you think? I like the barnacle but not sure about the other creatures.Attachment 292349

Here's a better photo.

Are these hydroids?

[billy mitchell]

need id on this that was hanging out of the button coral...is not there now and coral seems to only be opened say 80%.the other half is opened normal
have you an idea what this would be good/bad
[/IMG][IMG][/IMG]

[cloak]

If it wasn't moving around on it's own, I think it might just be a sponge of some sort.

[StangLvr78]

harmless bristleworm?

[StangLvr78]

that is the best pic i could get...i have a 3-4 inch sand bed and it was long (about 2-2.5 inches). Im pretty sure iy's a bristle worm, I just wanted to make sure. i held a flash light up to the tank to get a better look and it did react to the light. thank you

[QuiGonJay]

OK Random Creature Gurus, here is the latest curiosity from my new tank. I am guessing some sort of nudibranch. Very small, so hard to photo. One shot is underneath (it was on the glass), the other from the top (you can just make out the two eye/antennae stalks).

Any advice appreciated!!

[StangLvr78]

Is this an Emerald Crab? I didn't see a forum for crab and what not. Thank you...

[paperdesk]

Originally Posted by paperdesk

Here's a better photo.

Are these hydroids?

Should I be concerned about these?

[Fishmaster13]

Not all crabs are bad. I agree that small hermits are the best, but some other crabs such as Emerald crabs can be extremely beneficial and stay to small to do any harm to your fish. I've had Emerald crabs in all my tanks and they've been great. They eat tons of algea and have never bothered my corals. I've also had a Sally Lightfoot crab for nearly 2 months he's been fine with everything so far I've heard they can get big but no problems yet.

[StangLvr78]

Originally Posted by Fishmaster13

Not all crabs are bad. I agree that small hermits are the best, but some other crabs such as Emerald crabs can be extremely beneficial and stay to small to do any harm to your fish. I've had Emerald crabs in all my tanks and they've been great. They eat tons of algea and have never bothered my corals. I've also had a Sally Lightfoot crab for nearly 2 months he's been fine with everything so far I've heard they can get big but no problems yet.

Thank you. I thought it was an emerald crab, i just wanted to make sure. I've seen thenm at my LFS and this little guy must have come in on something....I love FREE stuff...lol

[Big_Boss_77]

Originally Posted by StangLvr78

Is this an Emerald Crab? I didn't see a forum for crab and what not. Thank you...

I've got two of these in my tank and I love them. They're probably the most entertaining livestock I own. Every now and then I'll catch them pacing the perimeter of the tank waving their arms above their heads. Quite comical

[crusoe]

Can the Nerite snail eggs be brown in color with a white tip sticking out?

[paperdesk]

Originally Posted by crusoe

Can the Nerite snail eggs be brown in color with a white tip sticking out?

If you're referring to my question, these are definitely not eggs. They are come kind of polyp type structure.

[killinit123]

Originally Posted by StangLvr78

Is this an Emerald Crab? I didn't see a forum for crab and what not. Thank you...

im not too sure that is an emerald crab.. are the claws pointed? or are they flattened at the tips?

[StangLvr78]

Originally Posted by killinit123

im not too sure that is an emerald crab.. are the claws pointed? or are they flattened at the tips?

i will have to look next time it's out...what do you think it is?