- Joined
- Dec 5, 2019
- Messages
- 59
- Reaction score
- 27
Recently discovered these black critters crawling in my tank. At first I only noticed a few, but tonight I decided to check on my tank hours after lights out and noticed a lot of them crawling all over the rocks and on some coral as well. It’s hard to take a picture so I attached a video link. Could anyone please help me identify these critters and if they’re a threat to my reef.