
L081 Baryancistrus sp.
26–30°C · pH 6–7.5 · 300L

Gold-marked L177 Baryancistrus pleco for experienced keepers. Peaceful aufwuchs grazer needing 26-30C river-style water and a 150 L tank.
Adult size is the maximum length this species reaches at full maturity (scientific sources). The livestock you receive will be younger and smaller — pick a size variant above for the actual shipping size. Photos are AI-enhanced, so the animal may show subtle colour or marking differences.
L177 Baryancistrus sp.
Gold-marked L177 Baryancistrus pleco for experienced keepers. Peaceful aufwuchs grazer needing 26-30C river-style water and a 150 L tank.
Adult size is the maximum length this species reaches at full maturity (scientific sources). The livestock you receive will be younger and smaller — pick a size variant above for the actual shipping size. Photos are AI-enhanced, so the animal may show subtle colour or marking differences.

Plecos are the ultimate algae-eating catfish for freshwater aquariums. From the tiny bristlenose to the massive common pleco, there's a pleco for every tank size.
Maintain these water conditions for optimal health and vibrant colors
Serious pleco keepers tend to ration tank space for fish like this one. L177 Baryancistrus sp. is a gold-marked South American catfish with a reputation as a rewarding but demanding charge — a strain for experienced aquarists who can run a warm, river-style aquarium and keep it stable. Heat is the headline requirement: this catfish wants water between 26 and 30°C, noticeably warmer than the standard community brief, with pH between 6.0 and 7.5 and soft to moderately hard conditions in the 2–12 dGH band.
Growing to around 12cm and living roughly ten years with consistent care, the L177 holds the bottom of the aquarium, working over surfaces as a primarily herbivorous aufwuchs grazer. Despite its Difficult care rating it remains a thoroughly peaceful fish, well suited to community life alongside small to medium tetras, rasboras, Corydoras, peaceful dwarf cichlids and other non-aggressive loricariids. What it cannot tolerate is competition for food: large aggressive cichlids, fin-nippers, highly territorial bottom dwellers and boisterous species that strip rations away before a methodical grazer can reach them all belong on the avoid list. A 150-litre aquarium is the minimum we recommend, giving the fish grazing territory of its own plus the water volume that makes high-temperature stability achievable.
Hardness deserves a moment’s attention too. The 2–12 dGH window leans soft, in keeping with the river-style brief, and the steadier you hold it the better this strain settles. Plan the bottom of the tank as its workplace: open grazing surfaces, broken sight lines, and enough floor space that Corydoras or fellow loricariids can pass through without friction. Meet those terms and the Difficult billing applies only to the spec sheet, not to the day-to-day.
Prepare the aquarium before the fish: a mature 150-litre-plus tank already holding a steady 26–30°C is the difference between an L177 that thrives and one that merely survives. Choose calm midwater shoals over greedy feeders so its grazing patches go unplundered, and treat this as a decade-long commitment rather than a quick splash of gold for the substrate. Every L177 Baryancistrus sp. we supply travels with a licensed live-animal courier within the UK and is covered by our live arrival guarantee.

26–30°C · pH 6–7.5 · 300L

24–30°C · pH 6–7.5 · 400L

26–30°C · pH 5.5–7.5 · 80L

23–28°C · pH 6–7.5 · 80L

24–30°C · pH 6–7.5 · 300L

18–26°C · pH 6.5–8 · 30L

23–27°C · pH 7.4–8.4 · 500L

20–27°C · pH 6–7 · 54L

23–27°C · pH 7.4–8.4 · 150L

24–28°C · pH 6.5–7.8 · 300L

20–24°C · pH 7–8 · 45L

24–28°C · pH 6.5–7.5 · 2000L

24–28°C · pH 7.5–8.5 · 200L

24–28°C · pH 5.5–7 · 60L

18–25°C · pH 6–8 · 100L

24–28°C · pH 7–8 · 120L

18–28°C · pH 6.5–8 · 20L

24–27°C · pH 7.5–8.8 · 150L

22–26°C · pH 6–7.5 · 60L

24–28°C · pH 7.5–8.5 · 40L

24–28°C · pH 7.5–8.5 · 500L