No photo yet
Sign in to submit the first photo
Royal Pleco
Panaque nigrolineatus
Animalia›Chordata›Actinopterygii›Loricariidae
📍 Orinoco Basin, Venezuela
Royal plecos have striking dark striping on a grey-brown body and spoon-shaped teeth adapted for rasping wood. Driftwood is an essential part of their diet and tank décor. They grow large and require spacious tanks with powerful filtration.
Care Guide
Diet
Royal plecos are obligate wood-eaters and require driftwood as a primary food source for rasping and digestion. Supplement with high-quality sinking pellets, algae wafers, and blanched vegetables (zucchini, cucumber, spinach) 3-4 times weekly. Feed in the evening as they are nocturnal and most active after lights out.
Behavior
Royal plecos are peaceful, nocturnal bottom-dwellers that spend most of the day hidden in caves or under driftwood. They become territorial with their own species, so only one per tank is recommended unless the aquarium exceeds 200+ gallons. They are generally solitary and non-aggressive toward other fish, though they may uproot plants while foraging.
Breeding
Breeding Royal plecos in captivity is extremely rare and difficult. They require very large tanks (200+ gallons), specific cave structures, and precise water conditions to trigger spawning. Successful captive breeding is virtually undocumented, making wild-caught specimens the norm in the hobby.
Tank Mates
Compatible algae-eater; keep only one Royal per tank to avoid territorial conflict
Small, peaceful schooling fish that occupy mid-water and don't compete with bottom-dwelling plecos
Peaceful schooling fish with identical water parameter needs; occupy different tank zones
Algae-eating invertebrates that won't compete for wood; avoid if pleco is aggressive toward small creatures
Peaceful algae-eaters that occupy similar zones; provide supplemental algae sources for both species
Common Diseases
Ich (Ichthyophthirius multifiliis)
White spots on body and fins, rapid breathing, rubbing against objects, lethargy
Raise temperature gradually to 28-30°C, perform 25% water changes daily, use aquarium salt (1 tsp per 5 gallons) or commercial ich treatment; maintain for 10-14 days
Fin Rot
Frayed or deteriorating fins, discoloration at fin edges, lethargy, loss of appetite
Improve water quality with frequent 30% water changes, reduce ammonia/nitrite, use antibacterial medication if severe; ensure adequate driftwood for natural behavior
Bacterial Infections
Open sores, cloudy eyes, loss of appetite, color fading, fin damage
Perform 50% water change immediately, treat with broad-spectrum antibiotic medication, maintain pristine water conditions; isolate if possible
Nutritional Deficiency
Stunted growth, color loss, lethargy, curved spine, reduced wood-rasping behavior
Ensure adequate driftwood availability, supplement with varied vegetables and quality sinking pellets; provide vitamin-enriched foods 2-3 times weekly
Community Photos
0 photosPhotos are added when members log a tank with this species and upload a photo in their tank journal. Add your own tank to contribute.
No photos yet — add a tank with Royal Pleco to be the first!
Sign in to vote.
Tips from the community 💡
0 tipsReal experiences, care advice, and keeper notes. Finn learns from these too.
Sign in to share your experience.
No community tips yet — be the first to share your knowledge!
Quick Facts
- diet
- Herbivore – driftwood (essential), algae wafers, vegetables, sinking pellets
- lifespan
- 10+ years
- max size
- 43 cm (17 in)
- tank size
- 75 gallons minimum
- temperament
- Peaceful; territorial with own kind
Water it likes
- ph
- 6.5–7.5
- ammonia
- 0 ppm
- nitrate
- <20 ppm
- hardness
- 3–15 dGH
- temperature
- 73–82°F (23–28°C)