fish not eating

i’ve had my blenny for abt 7-8 months and he used to eat like a pig (I mean that in a good, loving way). but now I haven’t seen him eat in three days!! i’ve moved all of my fish into a hospital tank after the first full day of him not eating, thinking it was due to illness. i’m worried this...

I put in some nori today and noticed that my Yellow Tang did not pick away at it immediately like he normally does. I took a closer look and it looks skinnier than normal and I am fearful that the tang may be constipated. The pictures below show what looks like large bumps around the belly...

Hi guys. I have a new tank (properly cycled) with a pair of clowns, a yellow watchman goby and a one spot foxface. I added the foxface one week ago. It was behaving as expected for a new fish, and was eating flakes just fine. But on its third day it just stopped eating. He won't accept nori...

Hello, My name is Jeff. I am new to this forum. I currently have a 250 gallon, 75 gallon, 55 gallon, 35 gallon, and 10 gallon aquarium, all saltwater. This post is about my new 1 week old baby bamboo shark. For some background I want to put out there that I have a lot of experience with sharks...

I am currently in the process of starting my first saltwater aquarium which is a 120 gallon FOWLR. Yesterday I got my first fish, a banggai cardinalfish. It is currently in my 10 gallon QT tank before it will go in the display. Since I got it yesterday, it has been hiding in the corner of the...

I recently got a tiger angelfish in my tank and he looks really healthy and is active but he is not eating any of the food I put in the tank. I have it in a 120 with a gem tang and a really small clownfish. They are the only fish in the take and the angelfish already seems to have taken over the...