Caution, conditional match
Data confidence: high
- hybridization risk: These livebearers can hybridize, so separate them if line identity matters.
Can Endler Livebearer live with Guppy?
Compare these two in the visual aquarium planner
Transfers the two species into an editable 30 US gal example with count one each. This is not a stocking recommendation.
Troubleshooting community setups: see the compatibility result using temperature, pH, GH/KH, adult size, behavior, schooling needs, and predator/prey rules.
Conditional
Endler Livebearer and Guppy compatibility verdict
Short answer: Sometimes, but only if the warnings are handled. Plan for at least 10 gallons before adjusting for group size, filtration, and aquascape layout.
- hybridization risk: These livebearers can hybridize, so separate them if line identity matters.
- compatibility: Guppies and Endlers can hybridize, so keep them separate if preserving line identity matters.
Schooling and group-size requirements
This verdict assumes normal social groups, not one stressed specimen. Endler Livebearer should be planned at 5+; Guppy should be planned at 3+ before judging long-term compatibility.
Fry safety
If livebearer fry matter, assume most community fish will eat newborn fry unless the tank has dense plants, floating cover, and a separate grow-out plan.
Real-World Experience
Textbook score vs observed behavior
A compatibility score checks adult size, temperature, pH, hardness, temperament, and tank volume. Real tanks add variables the score cannot see directly: feeding aggression, cave ownership, plant cover, and whether fish can constantly see each other.
Line-of-sight and swim-zone pressure
Endler Livebearer and Guppy may compete for the same swimming lane, food path, or line-of-sight territory. Start with at least 10 gallons, then use hardscape, tall plants, and separated feeding zones to reduce chasing before it becomes a pattern.
Water parameter comparison
Endler Livebearer temperature72-82F
Guppy temperature72-82F
Endler Livebearer pH7-8.2
Guppy pH7-8.2
Endler Livebearer GH8-20 dGH
Guppy GH8-20 dGH
Minimum tank10 gal
Last updated2026-05-13
Confidence: high. Aggression, predator/prey, shrimp risk, schooling, and tank size rules are evaluated from curated freshwater attributes.
Common Questions
Can Endler Livebearer live with Guppy?
Sometimes, but only if the warnings are handled. Main reasons: hybridization risk.
What tank size do Endler Livebearer and Guppy need?
Plan at least 10 gallons before adjusting for group size, filtration, and aquascape layout.
Troubleshooting aggression between Endler Livebearer and Guppy
Problems can happen even when the gallon number is technically adequate. Check feeding order, repeated access to the same cave or plant mass, school size, and whether the aquascape gives either fish a direct line of sight across the whole tank.
How to break line-of-sight to reduce aggression
Use tall plants, rock piles, driftwood, and separate feeding stations so a dominant fish cannot patrol one open lane from end to end.