Large white dots everywhere

[Damien84]

Hey,

 

Wondering if anyone knows what these are. They are everywhere all over any algae in the tank and glass. They aren't spiropid worms as they move around like pods. However they are around the same size as a pod but they are more white and very very round. Pods seems to be more slender. Not sure if they are a pest or not.

 

Any ideas would be great. 

[dwdenny]

kind of look like maybe acoel flatworms. Those are more algae eating type but are very prolific. Would need a clearer picture to get a true ID or even a microscope picture. Here is ones that I have been siphoning out of my tank. Both the same thing from a little different angle.

[Damien84]

Thanks for the reply. They don't quite look like that though. They are round and move very quick like pods do.  Don't quite have that flatworm odd oval shape. I only have my phone to take a picture of them unfortunately. 

[Damien84]

Also for a scale reference they are roughly the size of the pods you have on the glass in bottom left of the second picture. Just quite a bit fatter and rounder.

[rough eye]

those are called fish snacks. that's the technical name. what sort of snackers you got in the tank?

[Damien84]

I have two clowns, Two cardinals,  green clown goby, bi colour blenny. 

 

What do you mean by fish snacks? what type of animal are they?

[rough eye]

7 minutes ago, Damien84 said:

I have two clowns, Two cardinals,  green clown goby, bi colour blenny. 

 

What do you mean by fish snacks? what type of animal are they?

i would have guessed they were some sort of pod, especially if they're fast-moving, but only seeing white dots makes them impossible to identify. copepods are less long than amphipods. or maybe - rotifers of some type?

 

i said fish snacks because my fish won't let anything float around uneaten except pineapple sponges that get loose.

[Damien84]

Oh ahaha yeah. I can't say I've seen anyone eating them but who knows. I've got a new pic. The red circle is one of them next to what I would call a normal pod. Blue are other normal pods and green are these big round things. 

[rough eye]

have you considered trying to scoop a couple up and put on a slide under a microscope?

[rough eye]

now that i think of it i haven't seen Asteria stars around in a while. wonder if a crab or shrimp has been snacking on them too.

[Damien84]

😛 I defo do not have those sort of tool available to me! I did consider they may just be another type of POD but I wasn't sure and thought someone might have seen something like this before on here. 

[Damien84]

Ok turns out after some research these little fellas are seed shrimp. ostracods. The more you know. 

[banasophia]

Yes, I was gonna say check out ostracods... is that what they look like?

[Damien84]

Yeah they run around like other pods but very round looking and white.