L330 Watermelon Royal Pleco (Panaque nigrolineatus laurafabianae)

The L330 Watermelon Royal Pleco is a premium, highly sought-after panaque known for its bold striped pattern resembling a watermelon rind. With its powerful build and constant wood-grazing behavior, this species is both a visual centerpiece and an active bottom dweller.

Native to South America, this pleco is famous for its unique ability to digest wood, making it a must-have for collectors who appreciate rare and functional fish.

Max Size

• 12–16 inches in captivity
• Thick-bodied and heavy once fully grown

Tank Size

• Minimum: 125 gallons
• Recommended: 180+ gallons for long-term care
• Requires strong filtration due to heavy waste production

Tank Mates

• Compatible with large, peaceful to semi-aggressive fish
• Great with:
  • Arowana
  • Datnoids
  • Large cichlids
  • Catfish
• Avoid other plecos unless the tank is very large

Diet

Primarily herbivorous with specialized needs:

• Driftwood (essential) – aids digestion
• Algae wafers and sinking pellets
• Fresh vegetables (zucchini, cucumber, sweet potato)
• Occasional protein (shrimp, wafers)

👉 Constant grazer—will spend most of its time rasping on wood and surfaces

Care & Behavior

• Peaceful but can be territorial toward other bottom dwellers
• Nocturnal tendencies—more active at night
• Requires driftwood in the tank at all times
• Produces a lot of waste—strong filtration is a must

Why We Love Them

• Unique “watermelon” striping pattern
• Rare L-number pleco with high collector value
• Functional algae and wood grazer
• Adds depth and activity to large aquariums

⚠️ Important Notes

• Needs driftwood to stay healthy—non-negotiable
• Heavy bioload—overfilter your system
• Can rasp on soft surfaces if underfed
• Grows large—plan accordingly