Redfin Dwarf Rainbowfish

Melanotaenia maccullochi

Redfin Dwarf Rainbowfish is a peaceful middle swimmer.

PeacefulMiddle swimmerBeginner – Intermediate

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

Quick facts

Adult size: ≤ 7 cm (≤ 2.8 in)
Aquarium size: 120 L or larger / ≥ 100 cm (≥ 39.4 in) minimum length
Care level: Beginner – Intermediate
Temperament: Peaceful
Swimming zone: Middle swimmer
Temperature: 20–30 °C
pH: 5.5–7.5
GH: 8–15 dGH
KH: 3–12 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: 120 L or larger / ≥ 100 cm (≥ 39.4 in) minimum length. Plan the layout and stocking within that limit.

Water parameters

Suitable water: temperature 20–30 °C, pH 5.5–7.5, GH 8–15 dGH, KH 3–12 dKH.

Temperament and compatibility

Redfin Dwarf Rainbowfish is peaceful and suits calm community fish.

Swimming zone and behavior

This fish uses the middle part of the aquarium, so leave enough open swimming space for movement and feeding.

Feeding

As an omnivore, Redfin Dwarf Rainbowfish should receive a varied diet rather than one repeated food type.

Natural habitat and origin

Origin: Papua New Guinea Australia.

Before adding this fish

Plan for an aquarium of 120 L or larger / ≥ 100 cm (≥ 39.4 in) minimum length.
Avoid aggressive or highly competitive fish.
Offer a varied diet that matches this species.

Similar fish profiles

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

Aru Rainbowfish Melanotaenia picta Same genus Same family Similar care level Beginner – Intermediate ≤ 9 cm (≤ 3.5 in) 22–27 °C Black Banded Rainbowfish Melanotaenia nigrans Same genus Same family Similar care level Beginner – Intermediate ≤ 10 cm (≤ 3.9 in) 23–28 °C Banded Rainbowfish Melanotaenia trifasciata Same genus Same family Similar care level Beginner ≤ 13 cm (≤ 5.1 in) 21–26 °C Ajamaru Rainbowfish Melanotaenia ajamaruensis Same genus Same family Similar care level Beginner – Intermediate ≤ 10 cm (≤ 3.9 in) 27–30 °C Boesemans Rainbowfish Melanotaenia boesemani Same genus Same family Similar care level Beginner ≤ 13 cm (≤ 5.1 in) 26–30 °C Barred Rainbowfish Chilatherina fasciata Same family Similar care level Same temperament Beginner – Intermediate ≤ 12 cm (≤ 4.7 in) 28–32 °C

FAQ

How large does Redfin Dwarf Rainbowfish get?

Redfin Dwarf Rainbowfish reaches ≤ 7 cm (≤ 2.8 in).

What aquarium size does Redfin Dwarf Rainbowfish need?

Use an aquarium of at least 120 L or larger / ≥ 100 cm (≥ 39.4 in) minimum length.

Is Redfin Dwarf Rainbowfish peaceful?

Yes. Redfin Dwarf Rainbowfish is recorded as peaceful and is best planned with calm community fish that do not harass it or dominate the feeding area.

What temperature is suitable for Redfin Dwarf Rainbowfish?

Keep it between 20 to 30 °C.