| Chemotherapeutic | Dose | Indication | Remarks |
| Acetylsalicylic acid | 50 grains/10 gallons prolonged bath | relieves shock and stress | for fresh and salt water |
| Acriflavin, hydrochloride | 10 ppm for 2 hours | protozoa, bacteria, fungi | not as safe as Acriflavin (neutral) |
|
Acriflavin
(neutral) . |
5-10
mg/L prolonged bath 7-10 days continuous _______________ 500 mg/L 30
min bath daily ______________ |
protozoa ______________ bacteria ______________ antiviral |
kills
plants _____________ none ______________ effective against Herpesvirus salmonis. Not effective orally. Efficacy questionable |
| Ampicillin, sodium | bacteria | not effective. not advised. | |
| Ampicillin trihydrate | bacteria | not effective. not advised. | |
| Aspirin | 50 grains/10 gallons prolonged bath | relieves shock and stress | for fresh and salt water |
| Atabrine |
30
mg/L for 1 hour daily for 3 days
10 mg/L for 3 days, continuous |
Cryptocaryon irritans | breaks down in water quickly |
| Atabrine hydrochloride |
30
mg/L for 1 hour daily for 3 days
10 mg/L for 3 days, continuous |
Cryptocaryon irritans | breaks down in water quickly |
| Aureomycin | 13 mg/L for 5 min ONCE | Oodinium sp. | questionable efficacy |
| Bacitracin | 60-75 mg/L indefinite | bacteria | not absorbed systemically |
| Basic Bright Green Oxalate |
60
mg/L for 45 seconds ONCE
1 mg/L for 2.5 hours |
protozoa, fungi | none |
| Baslows solution copper sulfate + TRIS buffer + EDTA) | 0.10 to 0.15 ppm ONCE | Amyloodinium and Cryptocaryon | toxic to freshwater fish |
| Betadine | not advised | ||
| Bleach . | 200 ppm for 1 hour | antibacterial, anti viral, antiprotozoal, anti fungal. Disinfectant | Used to sterilize tanks and equipment. Will kill fish and inverts. |
|
Bright
green, zinc free
. |
0.1%
painted on wound
67 mg/L for 1 min 0.2 mg/L for 1 hour 0.05-0.1 mg/L OID Q3D for three treatments |
fungi fungi fungi fungi, some bacteria, ch, Cryptocaryon, Oodinium fungi, some bacteria, Ich, Cryptocaryon, Oodinium |
Stains skin and fabrics. Is mutagenic, teraogenic. May be toxic to some species. May be toxic to fish fry. More toxic at higher temperature |
| Brilliant green, zinc free |
0.1%
painted on wound
67 mg/L for 1 min 0.2 mg/L for 1 hour 0.05-0.1 mg/L OID Q3D for three treatments |
fungi fungi fungi fungi, some bacteria, ch, Cryptocaryon, Oodinium fungi, some bacteria, Ich, Cryptocaryon, Oodinium |
Stains skin and fabrics. Is mutagenic, teraogenic. May be toxic to some species. May be toxic to fish fry. More toxic at higher temperatures |
| Chloramphenicol | not effective as a bath | ||
| Chloramphenicol, sodium succinate | not effective as a bath | ||
| Chloromycetin | not effective as a bath | ||
| Chlorotetracycline | 13 mg/L for 5 min ONCE | antibacterial | many resistant strains |
| Chloroquine | 10 mg/L indefinite, ONCE | antiprotozoal, control of Cryptocaryon irritans | somewhat effective |
| Chloroquine diphosphate | 10 mg/L indefinite, ONCE | antiprotozoal, control of Cryptocaryon irritans | somewhat effective |
| Copper, buffered (copper sulfate + TRIS buffer + EDTA) | 0.10 to 0.15 ppm ONCE | Amyloodinium, Cryptocaryon | toxic to freshwater fish |
| Copper sulfate |
0.0001
mg/L indefinite, continuous
bath 500 mg/L for 1 minute 2.3 to 4.0 mg/L indefinite |
protozoa protozoa algae control |
toxic to inverts and live plants. Prolonged exposure may cause anemia. kidney, liver and gill problems over time. Highly toxic to freshwater fish. |
|
Copper sulfate, citrated |
0.15 to 0.20 mg/L for 14 days | protozoa | toxic to inverts and freshwater fish. Perhaps the most effective form of copper. |
|
Copper
sulfate, chelated |
2 mg/L to 8 mg/L | protozoa | generally not as effective as non chelates. Prolonged exposure may cause anemia, gill, kidney and liver damage. Not advised. |
| Cycloserine. | 50 mg/gal every other day for 3 treatments | bacteria, possibly fish tuberculosislosis | Saltwater only |
| Calcium hypochlorite |
200
ppm for one hour 300 ppm |
antibacterial,
antiviral, antifungal, antiprotozoal, disinfectant.
effective against Myxosoma |
Will kill fish and inverts. For sterilization ONLY |
| Daraprim | 1 ppm | Cryptocaryon, Ich | not effective |
| Dichlorvos | 0.2 mg/kg continuous (for 4 weeks) | monogenea, digenea crustaceans | none |
|
Dimetridazole . |
50 mg/L for 24 hours. Repeat daily for 10 days | Hexamita | not very effective |
| Dimilin | 0.01 mg/L 48 hours. 3 treatments, 6 days apart. | crustaceans | 76% of this chemical persists at least one week in pond water |
|
Dylox |
0.25
mg/L for 1 hr. every 5 days 0.5 mg/L for 1 hr. every 5 days 2.0 mg/L for 1 hr., ONCE |
trematodes, crustaceans | potentially carcinogenic. Doses are in active ingredient. Water to be discarded should be brought to pH 11 |
|
Epsom
salts |
70 g/L for 5 min ONCE | cathartic | freshwater fish only |
| Erythromycin |
50
mg/L for 15 min 250 mg/ 25 gallons, indefinite |
antibacterial
Cyanobacter control |
ineffective.
not advised
will not harm biological filter at this dose |
| Flagyl | 4 mg/L for 3 to 4 days | Hexamita | change water with each treatment. poorly soluble |
| Flumequine | 50 mg/L for 30 minutes | Furunculosis | absorption increased at lower pH. |
|
Formaldehyde
(37%)
. . |
0.4
ml/L up to 1 hour every 3 days in soft water. 0.5 ml/L up
to 1 hour every three days in hard water 2 ml/L in marine water up to 1 hour every three days |
protozoa, monogenea, digenea, crustaceans | effect on fish is highly species specific. Not advised. Wear protective eye wear when using. POISON! |
| Fresh water | immerse marine fish for 5 to 10 min | extoparasites, protozoa | not for fishes with lesions |
|
Furacin |
2
ppm as a 24 hour bath 10 ppm as as 24 hour bath |
bacteria, antiseptic | not effective against Ich |
| Furanace | 0.05 to 0.1 mg/L indefinite bath | bacteria | non-food fish only |
| Furazone green |
2
ppm as a 24 hour bath
10 ppm as as 24 hour bath |
bacteria, antiseptic | not effective against Ich |
| HTH . |
200
ppm for one hour 300 ppm effective against _Myxosoma_. |
antibacterial, antifungal, antiviral, antiprotozoal disinfectant | Will kill fish and inverts. FOR STERILIZATION ONLY! |
| Hydrocortisone | 10 mg/L 30 minutes MAXIMUM as needed | shock | none |
| Hydrogen peroxide, 3% |
17.5
gm/ L for 10-15 min bath 5000 ppm dip for 5 min 1 ml/10 gallons/hour |
ectoparasites,
protozoacide antiseptic oxygen enhancer |
may disrupt biological filter with prolonged use. |
|
Iodine
7% tincture |
paint on wound and rinse immediately | antiseptic | none |
| Ipropan | 3-4 mg/L for 6-12 hours ONCE | Hexamita | none |
| Isoniazid. | 40 mg/ gal for three treatments, every other day | bacteria. Possibly effective against marine tuberculosis | none |
| Kanamycin | 750 mg/L for 2 hours OID | bacteria | none |
|
Levamisol
.
|
2
mg/L for 24 hours ONCE 50 mg/L for 2 hours ONCE |
nematodes | most effective against larval nematodes, swimbladder worms no increase in effectiveness with higher dose. LD50 for eels is 250 mg/. Single treatment kills ~ 50% of nematode load. |
| Magnesium sulfate | 70 g/L for 5 min ONCE | cathartic | freshwater fish only |
|
Malachite
green, zinc free
.
|
0.1%
painted on wound
67 mg/L for 1 min 0.2 mg/L for 1 hour 0.05-0.1 mg/L OID Q3D for three treatments |
fungi fungi, some bacteria, Ich, Cryptocaryon, Oodinium |
Stains skin and fabrics. Is mutagenic, teraogenic. May be toxic to some species if overdosed. MAy be toxic to fish fry More toxic at higher temperatures. |
| Malachite green, zinc free plus formalin |
0.1
mg/L indefinite
0.05- 0.1 mg/L OID Q3D for three treatments |
fungi, some bacteria, Ich, Cryptocaryon, Oodinium | Stains skin and fabrics. Is mutagenic, teraogenic. May be toxic to some species if overdosed. More toxic at higher temperatures. Formalin may disrupt biological filter. NOT ADVISED. |
|
Marine
salt |
22
g/L for 30 min 30 g/L for 10 min 1-3 g/L indefinite 6 g/L indefinite |
protozoa, fungi, Epistylis, osmoregulatory stress |
none
none subtherapeutic level "general tonic" |
|
Masoten |
0.25
mg/L for 1 hr. every 5 days 0.5 mg/L for 1 hr. every 5 days 2.0 mg/L for 1 hr., ONCE |
trematodes, crustaceans | potentially carcinogenic. Doses are in active ingredient. Water to be discarded should be brought to pH 11 |
|
Mebendazole |
1
mg/L for 24 hours ONCE
100 mg/L for 2 hours ONCE |
Pseudodactylogyrus | none |
| Merbromen | paint on wounds | disinfectant | do not get into gills |
| Mercurochrome | paint on wounds | disinfectant | do not get into gills |
| Merthiolate | paint on wounds | disinfectant, fungi, bacteria | rinse fish before returning to tank. Do not get into gills. |
| Methylene Blue |
2
mg/L prolonged bath up to 5 days, continuous 0.1 mg/L prolonged bath up to 5 days, continuous 50 mg/L for
10 seconds |
Cyanide
toxicity, oxygen
transfer across gills |
May
kill plants. Harmful to biological filter at higher doses. Will stain hands and fabrics.
Effectiveness reduced by organics in tank. none |
| Metronidazole | 4 mg/L for 3 to 4 days | Hexamita | change water with each treatment. Poorly soluble |
|
Micromycin |
400
mg/L for 1 hr. daily for 7 days
100 mg/L for 1 hr. daily for 7 days |
bacteria bacteria |
saltwater
fish only freshwater fish only |
| Minocycline | 100 mg/10 gallons every other day | bacteria | possibly effective against fish tuberculosis |
|
MS-222 |
50
to 100 mg/L 250 to 500 mg/L |
tranquilizer euthanizing solution |
use with caution. Dose is species specific. |
|
Neguvon
|
0.25
mg/L for 1 hr. every 5 days
0.5 mg/L for 1 hr. every 5 days 2.0 mg/L for
1 hr., ONCE |
trematodes, crustaceans | potentially carcinogenic. Doses are in active ingredient. Water to be discarded should be brought to pH 11 |
| Nifurpirinol | 0.05 to 0.1 mg/L indefinite bath | bacteria | non foodfish only |
|
Nitrofurazone |
2
ppm as a 24 hour bath
10 ppm as 24 hour bath |
bacteria, antiseptic | not effective against Ich |
| Nitrofurpyrinol | 2 mg/L for 19 hours ONCE | antiprotozoal | effective against Chilodonella. Not effective in salt water. Not effective against Ich. Can cause skin and gill lesions in catfish. Mutagenic and carcinogenic. |
| Oxytetracycline |
400
mg/L for 1 hr. daily for 7 days
100 mg/L for 1 hr. daily for 7 days |
bacteria |
saltwater
fish only freshwater
fish only Many resistant strains |
| Oxytetracycline hydrochloride |
400
mg/L for 1 hr. daily for 7 days
100 mg/L for 1 hr. daily for 7 days |
bacteria |
saltwater
fish only freshwater
fish only Many resistant strains |
| Ozone |
0.1
mg/L for 60 sec. daily for 7 days
70 mg/L for 10 min daily for 7 days 90 mg/L for 10 min daily for 7 days 0.1 mg/L
continuous. |
disinfectant, antibacterial, antiviral, antiprotozoal. Oxidizes organics. | use with caution. Can burn mucus membranes. Degrades rubber. Run ozonated water through carbon before returning to tank. Concentration must be checked daily or ozonator should be regulated by an ORP meter (preferred) |
|
Phenoxyethol |
100 mg/L as a 1 hr. bath, ONCE | fungi | none |
|
2-Phenoxyethol |
100 mg/L as a 1 hr. bath, ONCE | fungi | none |
|
Potassium permanganate |
1
g/L for 30-40 seconds. 20 mg/L for
1 hr. 2-5 mg/L indefinite |
crustaceans, protozoa |
Only
in acid water. Can be toxic to goldfish.
food fish use. Can cause massive fish deaths. Not advised. |
| Povidone-Iodine | not advised | ||
| Praziquantel HCL , |
10
mg/L for 3 hours
2 mg/L for 24 hours |
trematodes, cestodes, Dactylogyrus, Diplozoon, Proteocephalus | Levels can cause toxicity in Corydoras catfish. Not advised for juvenile fishes. Fish may appear narcotized after dip. Not easily dissolved in water. Repeat treatment at weekly intervals for 3 weeks for egg laying monogenes. |
| Primaquine phosphate | 15 mg/gal every other day for 5 treatments | Cryptocaryon | salt water only |
| Pyrimthamine | 1 ppm | Cryptocaryon, Ich | not effective |
|
Quinaldine |
20:1 with ethyl alcohol | fish tranquilizer | not advised due to alcohol content |
| Quinacrine |
30
mg/L for 1 hour daily for 3 days
10 mg/L for 3 days, continuous |
Cryptocaryon irritans | breaks down in water quickly |
| Quinacrine hydrochloride |
30
mg/L for 1 hour daily for 3 days
10 mg/L for 3 days, continuous |
Cryptocaryon irritans | breaks down in water quickly |
| Quinine hydrochloride |
30
mg/L for 1 hour daily for 3 days
10 mg/L for 3 days, continuous |
Cryptocaryon irritans | breaks down in water quickly |
|
Quinine sulfate |
30 mg/L for 1 hour daily for 3 days | protozoa | breaks down quickly in water |
| Salt water | 2 ppt as an indefinite bath | protozoa, fungi, Epistylis, osmoregulatory stress | none |
| Sea water | 2 ppt as an indefinite bath | protozoa, fungi, Epistylis, osmoregulatory stress | none |
| Simazine | 0.5-2.5 g/m3 indefinite | herbicide, algicide | food fish use. Will kill trees. |
|
Sodium
chloride |
22
g/L for 30 min 30 g/L for
10 min 1-3 g/L indefinite 6 g/L indefinite |
protozoa, fungi, Epistylis, osmoregulatory stress |
none subtherapeutic level "general tonic" |
| Sodium chlorite | 2-5 ppm indefinite | bacteria, protozoa | freshwater use only. May kill plants |
| Sodium hypochlorite | 200 ppm for 1 hour | antibacterial, anti viral, antiprotozoal, anti fungal . Disinfectant. | Used to sterilize tanks and equipment. Will kill fish and inverts. |
| Sodium sulfadiazine | 100 to 250 mg/L as a long duration bath | bacteria | will precipitate in water <pH 9. Repeat each day for 5 days. Good for one day. May be effective against Cryptocaryon |
| Sodium sulfathiazole | 250 mg/10 gallons as a long duration bath | bacteria | will precipitate in water <pH 9. Repeat each day for 5 days. Good for one day. May be effective against Cryptocaryon |
| Sodium thiosulphate | 1 gram/ 10 gallons | chlorine neutralizer | none |
| Sulfadiazine | 250 mg/10 gallons as a long duration bath | bacteria | will precipitate in water <pH 9. Repeat each day for 5 days. Good for one day. May be effective against Cryptocaryon |
| Sulfamethazine | 100 mg/L for 1 hour daily for 7 days | bacteria | none |
| Sulfathiazole sodium | 250 mg/10 gallons as a long duration bath | bacteria | will precipitate in water <pH 9. Repeat each day for 5 days. Good for one day. May be effective against Cryptocaryon |
| Sweet water | immerse marine fish for 5 to 10 min | extoparasites, protozoa | not for fishes with lesions |
|
Table
salt, non-iodized |
22
g/L for 30 min 30 g/L for
10 min 1-3 g/L indefinite 6 g/L indefinite |
protozoa, fungi, Epistylis, osmoregulatory stress |
none subtherapeutic level "general tonic" |
| Terramycin |
400
mg/L for 1 hr. daily for 7 days
100 mg/L for 1 hr. daily for 7 days |
bacteria |
Saltwater
fish only Freshwater fish only Many resistant strains. |
| Tetracycline |
400
mg/L for 1 hr. daily for 7 days
100 mg/L for 1 hr. daily for 7 days |
bacteria |
Saltwater
fish only Freshwater fish only Many resistant strains |
| Tetracycline HCL |
400
mg/L for 1 hr. daily for 7 days
100 mg/L for 1 hr. daily for 7 days |
bacteria |
Saltwater
fish only Freshwater fish only Many resistant strains. |
| Tincture of iodine 7% | antiseptic | Paint on wound and rinse immediately | |
| Tricaine methsulfonate |
15-66
mg/L 6-48 hours
50-330 mg/L 1-40 minutes |
sedation anesthesia |
use with caution |
|
Trichlorfon |
0.25
mg/L for 1 hr. every 5 days
0.5 mg/L for 1 hr. every 5 days 2.0 mg/L for 1 hr., ONCE |
trematodes, crustaceans | potentially carcinogenic. Doses are in active ingredient. Water to be discarded should be brought to pH 11 |
| TRIS buffer (copper sulfate + TRIS buffer + EDTA) | 0.10 to 0.15 ppm ONCE | Amyloodinium and Cryptocaryon | toxic to freshwater fish |
| Vancomycin | 2.0 mg/l for one hour, ONCE | bacteria (gram positive cocci) | has a shelf life of two weeks when in solution. |
| Vancomycin | 2.0 mg/l for one hour, ONCE | bacteria (gram positive cocci) | has a shelf life of two weeks when in solution. |
|
Victoria
Green
|
0.1%
painted on wound
67 mg/L for 1 min 0.2 mg/L for 1 hour 0.05-0.1 mg/L OID Q3D for three treatments |
fungi fungi, some bacteria, Ich, Cryptocaryon, Oodinium |
Stains skin and fabrics. Is mutagenic, teraogenic. May be toxic to some species if overdosed. May be toxic to fish fry. More toxic at higher temperatures. |