Tailbar cichlid
Vieja hartwegi
Also known as Hartweg's cichlid, Great tailbar cichlid, Paraneetroplus hartwegi
Care at a glance
- Temperature
- 75–82°F (24–28°C)
- pH
- 7.0–8.0
- Adult size
- 11 in (28 cm)
- Minimum tank
- 92 gal (350 L)
- Temperament
- Mostly peaceful
- Social behavior
- Solitary
- Swim level
- Middle
- Difficulty
- Medium
- Breeding
- Medium
- Rarity
- Rare
- Origin
- Grijalva River system of Chiapas, Mexico, and Guatemala, over rock in rivers, with a distinct fast-water form.
- Family
- Cichlidae
Overview
A single adult or pair needs a tank of at least 350 liters at 24 to 28 C and pH 7.0 to 8.0. Provide rockwork and sturdy decor. Feed a varied diet of pellets, frozen foods, and vegetable matter. It is more manageable than many large Central Americans but still territorial when breeding.
In the wild
The tailbar cichlid lives in the Grijalva River system of Chiapas, Mexico, and Guatemala. It occupies rocky rivers and has a distinct fast-water form built for current. This is a large, deep-bodied cichlid. Provide rockwork, open swimming space, and a large tank.
Good to know
Vieja hartwegi was described by Taylor and Miller in 1980 and reaches around 28 cm. Males develop dense red spangling over the body. A 2018 study documented a slender fast-water form that lacks the mid-body band, showing how variable the species is.
Did you know
It is named for the dark bar at the base of the tail, and river fish from fast water look noticeably slimmer than pond fish.
Where to buy
Some links may not be the exact species or variety.
…or ask your local fish store.
Appears in
Keeping Tailbar cichlid?
Track water tests, reminders and stocking fit.
Related species

Blackbelt Cichlid
Vieja maculicauda12.6 in (32 cm)66 gal (250 L)72–82°F (22–28°C)
Redhead Cichlid
Vieja melanurus14.6 in (37 cm)75 gal (285 L)77–82°F (25–28°C)
Pantano cichlid
Cincelichthys pearsei11.8 in (30 cm)119 gal (450 L)77–86°F (25–30°C)
Severum
Heros efasciatus11.8 in (30 cm)65 gal (245 L)72–84°F (22–29°C)
Spotted Severum
Heros notatus11.8 in (30 cm)58 gal (220 L)72–84°F (22–29°C)
Venustus cichlid
Nimbochromis venustus11.8 in (30 cm)74 gal (280 L)75–82°F (24–28°C)