Yellow tang's fin erosion

[MACATUA]

If he is keeping a yellow in a 20 gallon long term, I would not trust his judgement in fish keeping at all and would find somwhere else to purchase from.

[Innovator]

This looks to be a secondary bacterial infection and if you indeed had "black ich," Paravortex sp., then it probably stemmed from it. Understand your tank would have to remain fallow over a months' time along with regular siphoning (gravel vacuum). As for treatment of bacterial infections: Maracyn 2 (Minocycline) or Furacyn (Nitrofurazone) might be your best options as far as availability is concerned. To resolve "black ich," the least invasive method would be to include a cleaner goby or shrimp into the display along with routine freshwater dips; otherwise, Formaline can be used effectively. The cleaner goby or shrimp cannot be housed while medicating, which is why a separate quarantine tank is always recommended. If this were my fish I would first transfer to a quarantine, freshwater dip, medicate with an antibacterial, and regularly maintain water parameters. A generous mix of fresh seafoods should be offered daily, mostly compromising of Nori or Seaweed Selects (retail versions). Once the bacterial infection has been resolved and the tang regains its strength/overall health, I would hit the "black ich" dilemma.

[melosu58]

I agree that there are several stress factors here. Size of tank, Lack of correct diet,disease and parasites and stress. Here is an article that I asked a question about a tang in a small tank. The guy that answered is one of the best IMO.

[smn723]

melosu58, your link didn't work. just wanted to let you know.

[melosu58]

Click on the blue words that say here is

[smn723]

Yeah it takes you to the database for fish in tanks of 30 gal or less not the question you asked some guy.

[MACATUA]

It is the link off of a question about stocking a 30 gallon earlier today.

[melosu58]

Sorry. Friday is here. Let`s try again.

Let`s hope it`s right, Here.

[smn723]

HA! Shawn was finally right! giving you a hard time melosu

[cy88]

Thanks for the replies. I think I will start on fixing his diet, monitor the water quality, and also add one of 2 tiny cleaner shrimps to it.

I picked up some dry seaweed sheets, cut them up in small pieces, stuck a piece between 2 of the rocks, however he doesn't seem to be interested at all. Is that normal? I mean, eventually he'll go for it? Or they should be craving for it?

Right now, i have the LR in the middle, stacked with holes just so the fishes can swim from the front to the back of the tank. I am thinking of pushing all the LR to the back of the tank (of course with some holes for them to hide), thus creating more spaces for them for now, until I have my new bigger tank ready. Would that be a good idea? or it would create more stress?