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Compatibility Report
GuideMyTank compatibility analysis for Bristlenose Pleco and Guppy.
Score
96
Status
compatible
Confidence
100%
Structured species data supports this pairing when normal tank size, group size, and husbandry requirements are met.
The compatibility score for Bristlenose Pleco and Guppy is 96, with an overall status of High Compatibility.
This report considers important freshwater aquarium factors such as water temperature, pH overlap, temperament, schooling behavior, adult size, predation risk, and minimum tank size needs.
Compatibility scores are intended to support aquarium planning, not replace careful observation, quarantine, stocking judgment, or species-specific research.
Based on the available husbandry data, Bristlenose Pleco and Guppy are currently rated as High Compatibility. Use this result as a starting point, then confirm both species' care requirements before adding them to the same aquarium.
Use the complete care requirements alongside this compatibility result.
The Bristlenose Pleco (Ancistrus spp.), also known as the Bushynose Pleco or Bristlenose Catfish, is a peaceful freshwater catfish recognized by the distinctive bristles that develop around its snout. Smaller than many other plecos, they are popular community fish that spend much of their time grazing on surfaces and sheltering among driftwood, rocks, and caves. Bristlenose Plecos come in numerous species and aquarium-bred varieties, including Albino, Super Red, Calico, Longfin, and Black-Eyed Yellow forms. More specialized varieties include fish identified by L-numbers, such as the sought-after L183 Starlight Bristlenose (Ancistrus dolichopterus), along with L181, L182, and L184 Ancistrus. L-numbers are identification codes used in the aquarium hobby for loricariid catfish, particularly when a fish entered the trade before receiving a confirmed scientific name. An L-number therefore identifies a particular form or species and isn't simply a color or pattern designation. One thing I would not do in this guide is call the common Bristlenose itself “L144.” The original L144 designation referred to a particular wild form, while many yellow Bristlenose sold as “L144” today are actually captive-bred color strains.
The Common Guppy (Poecilia reticulata) is a small, colorful freshwater fish known for its bright colors, active personality, and ease of care. Native to northeastern South America and parts of the Caribbean, guppies are highly adaptable and have become one of the most popular aquarium fish worldwide. They are peaceful, social livebearers that thrive in groups and work well in many community aquariums. Their hardiness and relatively simple care requirements make them an excellent choice for beginner aquarists.
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