Flash Pleco
Panaqolus albivermis
Loricariidae
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About
L204 is the number on the tank; Panaqolus albivermis is the fish, and it was only described in 2013 even though the trade had been importing it since about 1996. PlanetCatfish's Cat-eLog writes the number with three digits as L204 and gives 'Flash Pleco' as the common name. The one thing to take away from this entry is that the bogwood is food. The Cat-eLog's feeding note reads 'A wood eating species; vegetables are avidly eaten. Animal protein can be given once in a while but should not be the main diet', and its furniture note asks for 'Sand or gravel bottom with a lot of driftwood'. A flash pleco in a tidy rock aquascape with no wood in it is a fish that slowly runs down, whatever else you put in the tank. Size is the other thing a shop label gets wrong, and it gets it wrong in both directions: the Cat-eLog gives 130 mm SL, FishBase and Wikipedia give 9.6 cm SL from the type series, and the fish on sale is a 5-6 cm juvenile. Plan for a 13 cm animal, with long trailing tips on the tail on top of that. It lives in one river - the San Alejandro, in the upper Ucayali drainage of Peru - and the IUCN has assessed it as Endangered, in part because it is collected in large numbers for the aquarium trade, so captive-bred stock is worth asking for by name.
Care
Warm, fast, oxygen-rich water: 26-28 C, real current - the Cat-eLog says a strong current is preferred and puts the natural conductivity at about 190 microsiemens - over sand or fine gravel, with a lot of bogwood and a slate or bamboo cave of its own. Feed after lights-out, wood and vegetables first and protein only now and then. Juveniles are, in the Cat-eLog's words, 'good citizens', and they become more territorial as they mature, so a second one needs its own cave at its own end of the tank. Tankmates are easy: the Cat-eLog suggests an active community with shoaling characins. Avoid fin-nippers, because those long trailing tail tips are exactly what a nipper aims at.
Diet
Wood-eater. Soft bogwood is a dietary staple, not decor. Then vegetables, algae and spirulina wafers and sinking pellets; animal protein only occasionally, mainly to condition breeders.
Tankmate compatibility
Gets along with (108)
Possible with care (266)
Avoid (44)
Computed by the AquaSage engine for a spacious reference tank — always check the full verdict for your exact setup in the calculator.
Telling males from females
What works for this species, most reliable first.
- Bristles and cheek spinesStrong · from about a year
Male plecos grow odontodes — spiny growths on the cheeks and along the leading pectoral rays. Bristlenose males additionally grow branching tentacles across the snout and over the top of the head.
Also in these lists
Similar species
Same category and the closest water parameters — if this species isn't quite it, start here.
Sold in Lithuania
These Lithuanian shops listed this species in their public catalogue (checked August 8, 2026). Stock moves — ask before you travel.
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Frequently asked questions
- What tank size does a Flash Pleco need?
- A Flash Pleco needs an aquarium of at least 120 litres (31.7 US gallons) with a footprint at least 80 cm (31.5 in) long — for this species, swimming length matters as much as raw volume.
- What water parameters does a Flash Pleco need?
- Flash Pleco does best at 24–30 °C (75.2–86 °F), pH 6.6–8 and a general hardness of 2–15 °dGH.
- Is the Flash Pleco suitable for beginners?
- Flash Pleco sits in the middle of the difficulty scale — manageable for a careful beginner who has done the reading, but it has specific needs worth researching first.