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Water parameters are all within acceptable ranges..
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The spot under the worm like thing on the stomach looks like abscessAre those worms on the stomach and side of the fish? Are they attached? I actually see one on the pectoral fin as well.
@Humblefish I just can't think of what these are, though I know I've seen them before.
Saltwater louse maybe?Looks "anchor worm like", but not exactly anchor worms.
Let me see what I can find ... but I bet @Lionfish Lair will know what they are.
Posthodiplostomum minimum: This trematode has several synonyms including: Neodiplostomum minimum, Neodiplostomum orchilongum and Postodiplostomum orchilongum. The life cycle of this trematode is very similar to that of D. spathaceum above, although, infectivity of cercariae to fishes lasts no more than 24 hours after release from the snail. Each cercaria actively raises a scale and enters under the scale pocket, causing irritation to the fish. Blood, congestion and hemorrhage occur at the bases of fins or other places of cercarial penetration. The trematodes migrate from the point of entry to visceral organs of the fishes, usually within one to three hours after penetration. Metacercariae are located in any organ of the fishes’ body, but are generally more numerous in the liver, kidney, heart, spleen and other organs of abdominal viscera. With many of the digenetic trematodes, the metacercariae within the skin results in increased melanin deposition, hence the term “black spot disease”. (Photo demonstrates "black grub" in the fin of an affected fish). Visible white or yellow spots in the visceral organs, usually no larger than 1 mm in diameter are often referred to as “white grubs” (photo) or “yellow grubs” (photomicrograph demonstrates "yellow grub" in muscle tissue of affected fish) and could be caused by several trematode species. Diagnosis of digenetic trematode infections is dependent upon identification of the genus and species of the trematode within infected fish.
I wonder if prazipro or general cure would be effective in this case. If they were on the yellow tang, they might be on the other fish.
Dactylogyrus trematodes are the "other flukes" we almost never see - but supposedly Prazipro does treat them.
No, this is much different. Black ich gets its name because it looks like a black version of white ich.This isn't the same as black ich is it???? This is a different worm, right? I'm asking because that paragraph above mentions "black spot disease".
No, this is much different. Black ich gets its name because it looks like a black version of white ich.