Description
Hypsolebias antenori
Scientific Name: Hypsolebias antenori
Common Names: Antenor’s Killifish, Antenori Killifish
Overview
Hypsolebias antenori, commonly known as Antenor’s Killifish, is a relatively rare and striking species of killifish native to the temporary ponds and streams of Brazil. This species is known for its vibrant coloration, especially in males, which feature a combination of vivid red, orange, and blue hues. As a member of the killifish family, it is adapted to life in seasonal water bodies, where it thrives in the warmer months before the water evaporates. Hypsolebias antenori is typically peaceful but can be territorial, especially during breeding.
Key Information
Size: 2–3 inches (5–7.5 cm)
Lifespan: 1–2 years (due to the seasonal nature of their habitats)
Temperament: Peaceful, but males can be territorial during breeding
Diet: Omnivore
Swimming Level: Mid to top level
Habitat & Tank Setup
Tank Size: Minimum 20 gallons for a pair, larger for a group
Group Size: Best kept in pairs or small groups
Substrate: Fine sand or smooth gravel
Decor: Rocks, driftwood, and plants (provide hiding spots and swimming areas)
Plants: Floating plants such as Java Moss or other hardy plants
Lighting: Moderate to bright
Filtration: Gentle filtration, ideally with some water movement
Water Parameters
Temperature: 72–82°F (22–28°C)
pH: 6.5–7.5
Hardness: Soft to moderately hard (3–12 dGH)
Water Quality: Clean water with regular water changes; moderate oxygenation
Feeding
Diet Type: Omnivore
Suitable Foods:
High-quality flakes or pellets
Frozen or live foods (brine shrimp, daphnia, bloodworms)
Small invertebrates and vegetable matter (e.g., spinach or zucchini)
Feeding Frequency: 1–2 times per day, in moderate portions
Tankmates
Compatible With:
Peaceful small fish (tetras, rasboras, small livebearers)
Peaceful bottom dwellers (Corydoras, small loaches)
Other non-aggressive killifish species
Avoid:
Large or aggressive species
Fast-moving fish that might outcompete them for food
Care Notes
Prefers stable water conditions and regular water changes to maintain water quality
Can be sensitive to changes in temperature and water parameters
Males are often more colorful, especially during breeding
Needs plants and decorations to provide hiding spots and visual barriers
As a seasonal species, their lifespan is relatively short, so regular breeding and replenishment are essential to keep a stable population in the aquarium
Fun Fact
Hypsolebias antenori is a seasonal killifish, meaning its native environment dries up during certain parts of the year, and its eggs survive in the mud until the next rainy season. This unique adaptation makes them especially resilient and interesting to care for in aquariums, where they often lay their eggs in the substrate for future hatching!