Common Hatchetfish

Gasteropelecidae sp.

Common Hatchetfish (Gasteropelecidae sp.) — Varies care, Peaceful, under Other. Minimum tank in the app: 33 US gal min; aim for 68–82°F and pH 6.5–7.5. The Common Hatchetfish is a captivating mid-water swimmer that thrives in well-planted environments, making it a great choice for those who appreciate dynamic tank aesthetics.

Common Hatchetfish (Gasteropelecidae sp.) in a planted freshwater aquarium
Care levelVaries
TemperamentPeaceful
Min tank size33 US gal min
pH range6.5–7.5
Temperature68–82°F
Max size1.6 in (4.0 cm)
Captive lifespan3–6 years
SchoolingNo

Captive lifespan reflects typical experience in a home aquarium, not maximum recorded age; genetics, sourcing, and care vary.

Natural distribution

South America

  • South America

Regional colours match the stocking calculator’s origin map.

Common Hatchetfish Tank Setup

To create an ideal habitat, focus on providing ample plant cover and floating vegetation that allows for both open swimming areas and hiding spots. A gentle water flow will suit their swimming style, and a darker substrate can enhance their coloration. Lighting should be moderate to simulate their natural habitat, helping to reduce stress and encourage natural behaviours.

What Do Common Hatchetfishs Eat?

They are opportunistic feeders and may dominate feeding times if competition arises. Offering a varied diet, including high-quality flakes, pellets, and occasional live or frozen foods, is essential for maintaining their health and enhancing their coloration.

Common Hatchetfish Tank Mates

Ideal tank mates include similarly sized, non-aggressive species that occupy different water levels, such as tetras or rasboras. Avoid pairing them with larger, boisterous fish that may intimidate them or compete for food. Intraspecies, they can coexist well in larger groups; however, overcrowding can lead to stress and heightened aggression.

Are Common Hatchetfishs Good for Beginners?

Care demand varies with setup and individual fish; use the numbers above as your baseline. Aquarists often underestimate the need for sufficient cover and space, leading to stress and territorial disputes. failing to maintain stable pH and temperature levels can compromise their wellbeing.

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