dangerous

When it comes to saltwater fish there's definitely a few that stand out on the danger level specifically ones that carry toxins or venom in their spines. I have a Pygmy Rooster Waspfish in my tank and I've had her for almost going on two years without any incidents (pics attached). In the future...

Cleaning tank we found these… they are moving. Living in the foam / charcoal filter and on/ in the ceramic bag. 2 clowns. Bicolor goby Watchman pistol shrimp pair. I feel pellets and the frozen for the shrimp. Can frozen food come alive? Haven’t put pods in it. First time seeing them. 7...

I found this worm in my tank a week or so ago. I decided to pull it out tonight to get a better look at it. I don’t think it’s a bristle worm. I’m worried it may be a bobbit worm of some sort. Can someone ID? And tell if it’s dangerous or not. Thanks.

Should I move the sand to release the bubbles, leave it, or another option? Hoping it's not hydrogen sulfide. And yes, I believe the diatoms are from my sandbed. Nvm it looks like a different algae, like hair or Dino's. Tank is around 2 months old with fish. Current meds in tank...Prazipro and...

Does anyone know if I should be worried about these tiny flatworms? I took this video of them in my refugium with a copepod for size reference.