Royal Pleco-Broken Line L191
Royal Pleco-Broken Line L191
Royal Pleco-Broken Line L191 (Panaque nigrolineatus) is a distinct species from the L027 Royal Pleco — the 'broken line' pattern refers to the interrupted, dashed line pattern on the body rather than the solid line patterning of other Panaque species. Wood-eating plecos of the Panaque and Panaqolus genera are the only vertebrates known to digest wood cellulose — a remarkable biological specialization that makes driftwood not just beneficial but essential.
Feeding & Care Tip: Driftwood must always be present — the fish will rasp it continuously. Supplement with Hikari Sinking Wafers and Sera Nature Pleco Chips. Offer blanched vegetables (zucchini, cucumber) and Hikari Frozen or Freeze-Dried Bloodworms 2–3 times per week. Strong filtration is essential — wood-eating produces significant waste.
⚠ Driftwood Requirement: Wood-eating Panaque and Panaqolus plecos must have driftwood available at all times. These fish rasp wood continuously as a dietary and behavioral necessity — their specialized teeth and digestive system are adapted for extracting nutrition from wood cellulose. Without driftwood, these fish will decline regardless of other foods provided. The aquarium must contain one or more substantial pieces of driftwood permanently.
Wood-eating plecos inhabit rocky rivers with abundant submerged wood. In the aquarium, driftwood must always be present — it is both food and shelter. Strong filtration is essential: wood-eating plecos produce enormous amounts of wood-fiber waste. Regular water changes help manage water quality.
Panaque species have the most specialized teeth of any loricariid — spoon-shaped teeth adapted for gouging wood — and a digestive system capable of extracting nutrition from wood cellulose. They are the only vertebrates known to subsist significantly on wood. In the aquarium, providing large pieces of driftwood that the fish can rasp is not optional — it is fundamental to their health.
Cave spawner — males guard eggs in tight wood crevices or PVC tubes. The cave-guarding behavior of Panaque males is attentive and persistent. Provide multiple pieces of driftwood with natural crevices.
Care & Ideal Parameters
| Difficulty | Easy — Moderate |
| Temperament | Peaceful — territorial between males |
| Typical Adult Size | 15.0 inches (38 cm) |
| Min. Group Size | Singly or pair |
| Ideal Temp | 75–84°F (24–29°C) |
| Ideal pH | 6.0–7.5 |
| Ideal GH | 2–15 dGH |
| Ideal KH | 0–8 dKH |
| Staple Food | Driftwood (always present); Hikari Sinking Wafers; Sera Nature Pleco Chips |
| Treat / Supplement | Hikari Frozen or Freeze-Dried Bloodworms; blanched vegetables |
| Origin | Orinoco River basin, Venezuela and Colombia |
| Notes | L191. Distinct from L027 — broken dashed line pattern. Orinoco drainage. Driftwood essential. |
