shortnose chimaera of the family Chimaeridae, found in deep sub-Antarctic waters on the Campbell Plateau and the The Snares Shelf south of New Zealand's Stewart Island/Rakiura. Its length is up to one metre.

The first spine on the first dorsal fin is substantial, the rest of the fin quickly falling away forming a fin that is high and triangular. The second is low and even. The pectoral fins are large and paddle-like, and the pelvic fins are smaller versions of these. The caudal filament is long and stout.

The pale ghost shark replaces the dark ghost shark in deep southern waters. The snout is more rounded and it is paler, as its common name implies. It is pale brown above with a few indistinct darker bars, and white below.

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collumnaris

An infection will usually first manifest in fish by causing frayed and ragged fins. This is followed by the appearance of ulcerations on the skin, and subsequent epidermal loss, identifiable as white or cloudy fungus-like patches. Gills will change colour, either becoming light or dark brown, and may also manifest necrosis. Fish will breathe rapidly and laboriously as a sign of gill damage.