Fish Sulfa SMZ/TMP 960mg Fish Antibiotic – 30 & 60 Tablets

Fish Sulfa SMZ/TMP 960mg is a powerful, dual-action fish antibiotic formulated to treat bacterial infections in freshwater and saltwater aquarium fish. Each tablet combines 800mg of sulfamethoxazole with 160mg of trimethoprim, delivering a total antibacterial strength of 960mg.

Also commonly searched as Fish Sulfa Forte, this broad-spectrum aquarium antibiotic is used for fin rot, tail rot, bacterial gill disease, infected eyes, popeye, skin ulcers, open wounds, Aeromonas, Pseudomonas and other susceptible bacterial infections.

Sulfamethoxazole and trimethoprim attack two consecutive stages of the bacterial folic-acid pathway. This powerful sequential blockade prevents susceptible bacteria from producing essential compounds needed for growth and survival.

What Does Fish Sulfa Treat?

Fish Sulfa is designed for diseases caused by bacteria susceptible to sulfamethoxazole and trimethoprim. Its dual-action formula is particularly valuable for difficult or persistent bacterial infections.

• Fin rot and tail rot
• Bacterial gill disease
• Aeromonas bacterial infections
• Pseudomonas bacterial infections
• Infected eyes and bacterial popeye
• Open sores and bacterial skin ulcers
• Infected wounds, cuts and abrasions
• Red lesions and inflamed tissue
• Bacterial mouth infections
• External and internal bacterial infections
• Systemic bacterial infections and septicemia
• Secondary bacterial infections following injury or stress

Common Signs of a Bacterial Fish Infection

Bacterial diseases can progress quickly and become fatal when the infection reaches the bloodstream or internal organs. Fish Sulfa may be appropriate when fish display symptoms consistent with a susceptible bacterial infection, including:

• Frayed, receding or discolored fins
• Red, inflamed or deteriorating fin edges
• Open sores, ulcers or crater-like lesions
• Red streaks or hemorrhaging beneath the skin
• Cloudy, swollen or protruding eyes
• Inflammation or redness around the eyes
• Pale, swollen or damaged gills
• Rapid breathing or gasping near the surface
• White or damaged tissue around the mouth
• Abdominal swelling or unusual bloating
• Loss of appetite, weakness or isolation

Powerful Dual-Action Fish Antibiotic

Fish Sulfa combines two antibacterial ingredients that attack the same essential bacterial process at different stages:

• Sulfamethoxazole prevents susceptible bacteria from producing dihydrofolic acid.
• Trimethoprim blocks the next stage required to produce active tetrahydrofolate.

By blocking two consecutive steps, the combination produces a much stronger antibacterial effect than either ingredient used alone. Susceptible bacteria lose the ability to manufacture nucleic acids and proteins required for reproduction and survival.

This dual-action mechanism makes Fish Sulfa a powerful choice for broad bacterial coverage and infections that may be difficult to control with a single-agent medication.

Why Fish Sulfa Is a Powerful Aquarium Antibiotic

• Combines two proven antibacterial ingredients
• Contains 800mg sulfamethoxazole and 160mg trimethoprim
• Provides a total strength of 960mg per tablet
• Attacks two stages of bacterial folic-acid production
• Targets susceptible gram-positive and gram-negative bacteria
• Powerful option for difficult bacterial infections
• Treats fin rot, tail rot and bacterial gill disease
• Useful for ulcers, infected wounds and bacterial popeye
• Suitable for ornamental freshwater and saltwater fish
• Available in 30-tablet and 60-tablet packages

Available Fish Sulfa Sizes

Fish Sulfa 960mg – 30 Tablets

Fish Sulfa 960mg with 30 tablets provides a convenient supply of sulfamethoxazole and trimethoprim for aquarium owners requiring a powerful dual-action bacterial treatment. Every tablet contains a consistent 960mg combined strength.

Fish Sulfa 960mg – 60 Tablets

Fish Sulfa 960mg with 60 tablets provides a larger supply for additional treatment requirements, larger aquarium systems or fish keepers maintaining multiple freshwater or saltwater aquariums.

Fish Sulfa for Fin Rot and Tail Rot

Fin rot and tail rot cause progressive deterioration of the fins. The affected tissue may become frayed, discolored, inflamed and increasingly shorter as the bacterial infection advances.

When caused by bacteria susceptible to sulfamethoxazole and trimethoprim, Fish Sulfa stops bacterial reproduction and helps control the infection responsible for continuing fin and tail damage.

Correcting ammonia, nitrite, organic waste, overcrowding and chronic stress is also essential for successful recovery.

Fish Sulfa for Aeromonas Infections

Aeromonas bacteria are associated with ulcers, red sores, fin damage, hemorrhaging and systemic infections in aquarium fish. Severe cases may spread into the bloodstream and internal organs.

Fish Sulfa provides dual antibacterial action against susceptible Aeromonas strains, helping control localized wounds and more widespread bacterial disease.

Fish Sulfa for Pseudomonas Infections

Pseudomonas bacteria may cause fin rot, skin lesions, ulcers, infected wounds and systemic disease in weakened fish. These bacteria are frequently associated with poor water quality, injury and chronic environmental stress.

Fish Sulfa may be used when the bacterial strain is susceptible to sulfamethoxazole and trimethoprim.

Fish Sulfa for Bacterial Gill Disease

Bacterial gill disease damages the delicate tissue fish use to absorb oxygen. Common signs include rapid breathing, gasping near the surface, rubbing against objects and pale, swollen or inflamed gills.

Fish Sulfa targets susceptible bacteria involved in gill infections. Strong aeration and excellent water quality are essential when treating fish experiencing respiratory distress.

Fish Sulfa for Infected Eyes and Popeye

Bacterial eye infections may cause cloudiness, swelling, inflammation or protrusion of one or both eyes. Eye damage may begin with a physical injury or develop as part of a systemic bacterial infection.

Fish Sulfa provides broad antibacterial activity against susceptible bacteria associated with infected eyes and bacterial popeye. Water quality and the original source of the injury should also be corrected.

Fish Sulfa for Ulcers and Infected Wounds

Open wounds and ulcers allow bacteria to enter through damaged skin and invade deeper soft tissues. Without effective treatment, a localized wound may spread into a dangerous systemic infection.

Fish Sulfa helps fight susceptible bacteria involved in skin ulcers, open sores, red lesions, infected cuts and damaged tissue.

Freshwater and Saltwater Fish Antibiotic

Fish Sulfa may be incorporated into treatment programs for susceptible bacterial infections affecting ornamental fish maintained in freshwater and saltwater aquariums. This includes tropical fish, bettas, goldfish, koi, cichlids and marine ornamental species.

Whenever possible, move infected fish into a dedicated hospital or quarantine aquarium. A separate treatment tank allows closer observation, controlled medication use and better protection for healthy aquarium inhabitants.

Important Treatment Information

Confirm that the condition is bacterial before using Fish Sulfa. Sulfamethoxazole and trimethoprim treat susceptible bacterial infections; they do not eliminate parasites, viruses or true fungal diseases.

Follow the directions supplied with the product. Remove activated carbon, chemical filtration and UV sterilization when directed because these systems may reduce the available medication. Maintain strong aeration and monitor ammonia, nitrite, pH and fish behavior throughout treatment.

Complete the recommended antibiotic course even when visible symptoms begin improving. Ending treatment too early may allow surviving bacteria to multiply, cause the infection to return and contribute to antibiotic resistance.

Product Details

• Product name: Fish Sulfa
• Also searched as: Fish Sulfa Forte and SMZ/TMP
• Active ingredients: Sulfamethoxazole and trimethoprim
• Ingredient ratio: 800mg sulfamethoxazole and 160mg trimethoprim
• Total strength: 960mg per tablet
• Medication class: Sulfonamide combination antibiotic
• Product type: Dual-action broad-spectrum fish antibiotic
• Available quantities: 30 and 60 tablets
• Dosage form: Tablets
• Target: Susceptible bacterial infections
• Aquarium type: Freshwater and saltwater
• Intended use: Ornamental aquarium fish

Storage

Store Fish Sulfa in its original, tightly closed container in a cool, dry location. Protect the tablets from moisture, excessive heat and direct sunlight. Keep out of reach of children and animals.

Frequently Asked Questions

Is Fish Sulfa an antibiotic?

Yes. Fish Sulfa is a dual-action antibiotic combining sulfamethoxazole and trimethoprim for susceptible bacterial infections in ornamental aquarium fish.

What are the active ingredients in Fish Sulfa?

Each tablet contains 800mg of sulfamethoxazole and 160mg of trimethoprim, providing a total combined strength of 960mg.

What infections does Fish Sulfa treat?

Fish Sulfa is commonly used for fin rot, tail rot, bacterial gill disease, infected eyes, bacterial popeye, skin ulcers, wounds, Aeromonas, Pseudomonas and other susceptible bacterial infections.

Why are sulfamethoxazole and trimethoprim combined?

The two ingredients block consecutive stages in bacterial folic-acid production. This sequential action produces a stronger antibacterial effect than either ingredient used alone.

Can Fish Sulfa treat fin rot and tail rot?

Fish Sulfa may treat fin and tail rot caused by susceptible bacteria. Poor water quality, injury and chronic stress should also be corrected.

Can Fish Sulfa treat bacterial gill disease?

Fish Sulfa may treat gill disease caused by bacteria susceptible to sulfamethoxazole and trimethoprim. Strong aeration and clean water should be maintained throughout treatment.

Can Fish Sulfa treat popeye?

Fish Sulfa may help when popeye is associated with a susceptible bacterial infection. Injury, poor water quality and other possible causes should also be addressed.

Can Fish Sulfa be used for freshwater and saltwater fish?

Fish Sulfa may be used in appropriate treatment programs for ornamental freshwater and saltwater fish according to the supplied directions.

Does Fish Sulfa treat parasites or fungal infections?

No. Fish Sulfa is an antibacterial medication. It does not eliminate parasites, viruses or true fungal infections.

What sizes are available?

Fish Sulfa is available as 960mg tablets with either 30 or 60 tablets per package.

For ornamental fish use only. Not for human use or for fish intended for human consumption.