 isolation....fast!
definitely take the sickie out and isolate him before it spreads, it could be stress related. (say, if he was getting picked on)let him spend some time alone in the hospital zone.
I would go ahead and add something to insure the others don't get infected if it is contagious and do a water change also. Good Luck
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29gal. with livebearers(Guppies, Platies, Swordtails) Zebra Danios, Long finned Danios, 1-Glo-Lite, 1-Diamond Tetra, Siamese Algae eater, common Pleco, dwarf african frog (who stays hidden, so rarely seen) with live & artificial plants, rock and wood, HOB filter with bio-wheel
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55gal. planted:9 Neons, 3 Glo-Lite Tetras, 6 Black Neons, 4 Rummy Nose Tetras, 7 Harlequin Rasboras, 3 Lemon Tetras, 3 Congo Tetras(2-male 1-female), 2 bosemani Rainbows, 2 Australian Rainbows, 1 Blue Gourami, 2 Yo-Yo Loaches, 3 Clown Loach, 2 Siamese Algae Eaters, 2 Julii Cories, 1 Bristlenose Pleco, 1 Marbled Sailfin Pleco, 2 Ottocinclus (Ottos have not been seen in a long time)
Fluval 204, Powerhead 301
2x40w flourescent lights & a T-5 Helios)
Onyx sand, Flourite and gravel w/laterite substrate |