Good or Bad? Whatever it is?

[twin77]

Found this thing on my glass and sucked him up in a baster. Kinda looks like a slug but is able to flatten out. Looks to have a red spot on back end. The dreaded Flat worm? Anyone? Thanks

 

[Nibejeebies]

Any way you could zoom in on the guy hard to tell from those angles

 

[Lionfish Lair]

It's a flatworm.

 

[Nibejeebies]

Lionfish lair has spoken. critter expert. I was leaning that way but I don't have my glasses or contacts at the moment. [emoji851]

 

[Lionfish Lair]

Ya just gotta shout it out. Don't be shy.

 

[twin77]

I've heard that none are really good but is that a coral eating kind?

 

[Lionfish Lair]

It's a Convolutriloba species, which is easily identifiable by the little red dot and are a nuisance, not a coral predator. They are quite proliferate and can be unappealing to the eye. They used to say coral shading was an issue when their numbers got too high, but I believe since then they've said it's not this type that pose such a problem. They have been observed stealing food that the corals would have otherwise eaten. Their numbers have to be pretty high to start causing issues.... if they really cause issues at all. I've seen tanks completely covered, yet everything was completely fine and "happy". They were unsightly and that was about it.