Creature in Sump - Isopod (description but no photo)

[PotatoPig]

My sump has a heap of rock rubble in it (pod farm).

Last night I saw a little critter (1/2” to 3/4”) that looked kinda like a water louse with long antennas scurrying about them promptly hide.

This is probably an isopod, right?

Tank was mostly set up with dry rock, with a few recent adds of cultured live rock the LFS from a giant fishless tank they keep rock in, which is the only place I can imagine it came from.

Reading up on isopods… seems some are predatory pests and some are clean up crew/fish food. It is a reasonable (but not guaranteed) assumption that as this critter came from a long term fishless system that it’s unlikely to grow into something that’s gonna try eat fish?

I don’t think there’s any realistic way it’d get to the tank itself, but if there’s more than one and they reproduce I can see the offspring being able to survive a ride in the return pump.

Planned path: Observe

 

[SnazzyUrchin792]

Is it too fast to get a picture of or why no photo? I have what you’re describing but don’t know what it is. Will be following.

 

[PotatoPig]

Is it too fast to get a picture of or why no photo? I have what you’re describing but don’t know what it is. Will be following.

Not particularly fast, just didn’t have a camera handy and it was already in a difficult to view place with the rocks and by the time I pulled my phone out it had scuttled ~1” into an impossible to view nook in the rocks and from there presumably to the depths of the sump.