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For the control of external parasites on cultured food fishes: salmon, trout, catfish, largemouth bass, and bluegill sunfish. Organisms controlled include the protozoa: Ichthyophthirius spp. ("Ich"), Chilodonella spp., Costia spp., Scyphidia spp., Epistylis spp., and Trichodina spp. and monogenetic trematodes: Cleidodiscus spp., Gyrodactylus spp., and Dactylogyrus spp.
For the control of fungi of the family Saprolegniaceae on salmon, trout, and esocid eggs.
For the control of mortality in freshwater-reared finfish eggs due to saprolegniasis.
For the control of mortality in freshwater-reared salmonids due to bacterial gill disease associated with Flavobacterium branchiophilum.
For the control of mortality in freshwater-reared coolwater finfish and channel catfish due to external columnaris disease associated with Flavobacterium columnare (Flexibacter columnaris).
For the control of mortality in freshwater-reared coldwater finfish, fingerling and adult freshwater-reared coolwater finfish, and fingerling and adult freshwater-reared warmwater finfish due to saprolegniasis associated with fungi in the family Saprolegniaceae
For the treatment and control of Gyrodactylus spp. in freshwater-reared salmonids
For the control of mortality in freshwater-reared warmwater finfish due to external columnaris disease associated with Flavobacterium columnare
For an increase in the maximum florfenicol dose for the existing enteric septicemia indication for catfish, the addition of new species/classes, and the addition of indications for the control of mortality due to columnaris disease associated with Flavobacterium columnare in freshwater-reared finfish and for the control of mortality due to streptococcal septicemia associated with Streptococcus iniae in freshwater-reared warmwater finfish.
For an increase in the maximum daily dose for freshwater-reared finfish other than freshwater-reared warmwater finfish to provide a dosage range of 10-15 mg/kg body weight/day and to change the conditions of use to permit the use of florfenicol in recirculating aquaculture systems.
Freshwater-reared salmonids: For the control of mortality due to furunculosis associated with Aeromonas salmonicida. For the control of mortality due to coldwater disease associated with Flavobacterium psychrophilum.
Freshwater-reared finfish: For the control of mortality due to columnaris disease associated with Flavobacterium columnare.
Catfish: For the control of mortality due to enteric septicemia of catfish associated with Edwardsiella ictaluri.
Freshwater-reared warmwater finfish: For the control of mortality due to streptococcal septicemia associated with Streptococcus iniae.
Oxytetracycline dihydrate
Terramycin 100 for Fish and Terramycin 200 for Fish - NADA 038-439
Original approval - 09.23.1970, updated 07.16.2018
For the control of ulcer disease caused by Hemophilus piscium, furunculosis caused by Aeromonas salmonicida, bacterial hemorrhagic septicemia caused by Aeromonas liquefaciens (updated to A. hydrophila 07.16.2018) and pseudomonas disease in salmonids.
For the control of bacterial hemorrhagic septicemia caused by Aeromonas liquefaciens (updated to A. hydrophila 07.16.2018) and pseudomonas disease in catfish.
For the control of mortality in freshwater-reared salmonids due to coldwater disease associated with Flavobacterium psychrophilum, the addition of an indication for the control of mortality in freshwater-reared Oncorhynchus mykiss due to columnaris associated with Flavobacterium columnare, removal of the limitation on treating salmonids in water temperatures below 9°C, and the addition to the label of the previously approved indication for marking of skeletal tissue in Pacific salmon.
