What size tank does a Bucktooth Tetra need?

Bucktooth Tetra needs a minimum of 40 gallons, with 60 gallons recommended. They are middle swimmers. Keep in groups of 12+.

Is Bucktooth Tetra good for beginners?

Bucktooth Tetra is rated "advanced" difficulty (3/5). Suitable for intermediate fishkeepers.

What fish are compatible with Bucktooth Tetra?

Bucktooth Tetra is aggressive. Compatible tank mates include other aggressive fish with similar water parameters (pH 6-7.5, temp 72-82°F). Give adequate territory space.

Bucktooth Tetra

Exodon paradoxus

Family: Characidae • Origin: Various

Bucktooth Tetra (Exodon paradoxus) is a aggressive tetra reaching 6 inches. Keep in groups of 12+. Minimum tank: 40 gallons.

Min Tank

40 gal

Max Size

Temperature

72-82°F

6-7.5

Lifespan

9 years

School Size

12+

Swim Level

middle

Hardness

5-15 dGH

aggressiveadvancedcarnivoreschooling

Is Bucktooth Tetra Right for Your Tank?

Bucktooth Tetra is a moderate-care fish rated "advanced" (3/5). Suitable for hobbyists with some experience who can maintain stable water parameters. They need at least 40 gallons — a mid-size tank commitment. Plan your space accordingly.

Bucktooth Tetra is aggressive and best kept alone or with other robust species that can hold their own. Not suitable for peaceful community tanks. This is a schooling species — keep at least 12 together, or they may become stressed and display abnormal behavior. They are territorial — provide adequate hiding spots and maintain enough space to reduce aggression. Expected lifespan: 9 years with proper care.

Common Mistakes with Bucktooth Tetra

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Keeping fewer than 12 together

Bucktooth Tetra is a schooling species — they need a group of at least 12 to feel secure. Lone or paired individuals become stressed, hide constantly, and may develop health issues or aggression.

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Relying on a heater without a thermometer

Bucktooth Tetra needs 72–82°F. Heaters malfunction or drift over time — always use a separate thermometer to verify. Temperature swings of even 3–4°F can trigger stress and disease, particularly ich.

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Putting them in a tank under 40 gallons

Many beginners underestimate tank size needs. Bucktooth Tetra requires at least 40 gallons — ideally 60. Cramped tanks lead to stunted growth, aggression, and poor water quality.

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Housing with peaceful nano fish

Bucktooth Tetra is aggressive and territorial — small, peaceful species like neon tetras, endlers, or celestial pearl danios will be stressed, bullied, or eaten. Choose tank mates that can hold their own.