Red-fin Thresher Plecostomus L116

Aphanotorulus emarginatus

Red-fin Thresher Plecostomus L116 is a peaceful bottom-dwelling fish. Solitary housing is permitted; group housing needs additional context.

PeacefulBottom dwellerSolitary housing is permitted; group housing needs additional contextBeginner – Intermediate

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Quick facts

Adult size: ≤ 15.7" (≤ 40 cm)
Aquarium size: 64 US gal (243 L) or larger / ≥ 47.2" (≥ 120 cm) minimum length
Care level: Beginner – Intermediate
Temperament: Peaceful
Swimming zone: Bottom dweller
Temperature: 77–82°F (25–28°C)
pH: 6.4–7.2
GH: 5–10 dGH
Diet: Omnivore
Lifespan: up to 10 years
Group behavior: Solitary housing is permitted; group housing needs additional context

Care requirements

Care level: Beginner – Intermediate.

Lifespan: up to 10 years.

Aquarium size and space needs

Minimum aquarium size: 64 US gal (243 L) or larger / ≥ 47.2" (≥ 120 cm) minimum length. Plan the layout and stocking within that limit.

Water parameters

Suitable water: temperature 25–28 °C, pH 6.4–7.2, GH 5–10 dGH.

Temperament and compatibility

Red-fin Thresher Plecostomus L116 is peaceful and suits calm community fish.

Swimming zone and behavior

This fish uses the bottom area, so leave enough open substrate area for movement and feeding.

Feeding

As an omnivore, Red-fin Thresher Plecostomus L116 should receive a varied diet rather than one repeated food type.

Before adding this fish

Plan for an aquarium of 64 US gal (243 L) or larger / ≥ 47.2" (≥ 120 cm) minimum length.
Avoid aggressive or highly competitive fish.
Solitary housing is permitted; group housing needs additional context.
Offer a varied diet suited to this species’ documented feeding habits.

Natural habitat and origin

Origin: Brazil.

Similar fish profiles

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

Blue Eyed Plecostomus Panaque cochliodon Same family Similar care level Same temperament Intermediate – Advanced ≤ 11.8" (≤ 30 cm) 72–82°F (22–28°C) African Glass Catfish Pareutropius debauwi Similar care level Same temperament Bottom dweller Intermediate – Advanced ≤ 3.9" (≤ 10 cm) 72–81°F (22–27°C) African Butterfly Cichlid Anomalochromis thomasi Similar care level Same temperament Bottom dweller Beginner – Intermediate ≤ 3.1" (≤ 8 cm) 73–81°F (23–27°C) Bengal Loach Botia dario Similar care level Same temperament Bottom dweller Intermediate ≤ 5.1" (≤ 13 cm) 73–79°F (23–26°C) Black Ghost Knifefish Apteronotus albifrons Similar care level Same temperament Bottom dweller Intermediate – Advanced ≤ 19.7" (≤ 50 cm) 73–82°F (23–28°C) African Moon Tetra Bathyaethiops caudomaculatus Similar care level Same temperament Similar diet Beginner – Intermediate ≤ 3.1" (≤ 8 cm) 75–77°F (24–25°C)

FAQ

How large does Red-fin Thresher Plecostomus L116 get?

Red-fin Thresher Plecostomus L116 reaches ≤ 15.7" (≤ 40 cm). It needs specialist housing, long-term space, strong filtration, and carefully chosen companions.

What aquarium size does Red-fin Thresher Plecostomus L116 need?

Use an aquarium of at least 64 US gal (243 L) or larger / ≥ 47.2" (≥ 120 cm) minimum length.

Is Red-fin Thresher Plecostomus L116 peaceful?

Yes. Red-fin Thresher Plecostomus L116 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 Red-fin Thresher Plecostomus L116?

Keep it between 25 to 28 °C.

Should Red-fin Thresher Plecostomus L116 be kept alone or in a group?

Red-fin Thresher Plecostomus L116: Solitary housing is permitted; group housing needs additional context.