Blackfin Pearl Killifish

Austrolebias nigripinnis

Blackfin Pearl Killifish is a bottom-to-middle swimmer.

Semi-AggressiveBottom to middle swimmerBeginner – Intermediate

Save this fish or add it directly to one of your aquariums.

Quick facts

Adult size
≤ 2" (≤ 5 cm)
Aquarium size
5 US gal (20 L) or larger / ≥ 11.8" (≥ 30 cm) minimum length
Care level
Beginner – Intermediate
Temperament
Semi-Aggressive
Swimming zone
Bottom to middle swimmer
Temperature
63–73°F (17–23°C)
pH
6–7
GH
5–20 dGH
KH
1–8 dKH
Diet
Omnivore
Lifespan
up to 5 years

Care requirements

Care level: Beginner – Intermediate.

Lifespan: up to 5 years.

Aquarium size and space needs

Minimum aquarium size: 5 US gal (20 L) or larger / ≥ 11.8" (≥ 30 cm) minimum length. Plan the layout and stocking within that limit.

Water parameters

Suitable water: temperature 17–23 °C, pH 6–7, GH 5–20 dGH, KH 1–8 dKH.

Temperament and compatibility

Blackfin Pearl Killifish needs careful companion choice because it can be territorial or semi-aggressive.

Swimming zone and behavior

This fish uses the lower to middle part of the aquarium, so leave enough open substrate area for movement and feeding.

Feeding

As an omnivore, Blackfin Pearl Killifish should receive a varied diet rather than one repeated food type.

Make sure food reaches the substrate before faster fish take it.

Before adding this fish

  • Plan for an aquarium of 5 US gal (20 L) or larger / ≥ 11.8" (≥ 30 cm) minimum length.
  • Choose other fish carefully around this temperament.
  • Offer a varied diet suitable for an omnivorous bottom-dwelling fish.

Natural habitat and origin

Origin: Argentina.

Similar fish profiles

Use these profiles to compare fish with similar care level, size, temperature range, or swimming behavior.

Agassizs Corydoras Brochis agassizii Similar care level Bottom dweller Similar diet Intermediate ≤ 2" (≤ 5 cm) 70–79°F (21–26°C) Arowana Tetra Gnathocharax steindachneri Similar care level Same swimming zone Similar diet Beginner – Intermediate ≤ 2" (≤ 5 cm) 72–79°F (22–26°C) Axelrods Corydoras Hoplisoma axelrodi Similar care level Bottom dweller Similar diet Beginner – Intermediate ≤ 2" (≤ 5 cm) 72–79°F (22–26°C) Bandit Corydoras Hoplisoma metae Similar care level Bottom dweller Similar diet Beginner – Intermediate ≤ 2" (≤ 5 cm) 68–79°F (20–26°C) Black Arrow Royal Tetra Inpaichthys luizae Similar care level Same swimming zone Similar diet Beginner – Intermediate ≤ 2" (≤ 5 cm) 72–79°F (22–26°C) Black Line Tetra Hyphessobrycon scholzei Similar care level Same swimming zone Similar diet Beginner – Intermediate ≤ 2" (≤ 5 cm) 72–81°F (22–27°C)

FAQ

How large does Blackfin Pearl Killifish get?

Blackfin Pearl Killifish reaches ≤ 2" (≤ 5 cm).

What aquarium size does Blackfin Pearl Killifish need?

Use an aquarium of at least 5 US gal (20 L) or larger / ≥ 11.8" (≥ 30 cm) minimum length.

Is Blackfin Pearl Killifish peaceful?

Blackfin Pearl Killifish needs more careful companion choice because the temperament data points toward boundaries, space, or similar-sized fish.

What temperature is suitable for Blackfin Pearl Killifish?

Keep it between 17 to 23 °C.

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