Species guide
Guppies in Planted Aquariums: Care Guide
Fish
Guppies (Poecilia reticulata) look beginner-proof and then fill a tank with fry. Planted cover is excellent for them. They still need heat, a cycle, and a plan for males-only or a grow-out path.
- Livebearer
- 10+ gal
- Heater
- Plants = fry cover
Quick facts
| Temp | 24–28 °C |
|---|---|
| pH / GH | 7.0–8.2, moderate–hard; they like minerals |
| Volume | 10+ gal; 20 gal if mixed sexes |
| Sexes | Males only = no fry. Mixed = exponential |
| Plants | Wisteria, moss, fern — fry hideouts |
| Food | Quality flakes/micro pellets + occasional frozen; not just cheap flakes |
| Flow | Gentle–moderate |
| Lifespan | 1–3 years; fancy lines shorter |
Overview
Guppies are hardy until they are not: cold snaps, dirty nanos, and all-flake diets wreck fancy tails. A planted 10–20 gal with stable warmth and minerals is the actual easy mode. Mixed sexes without a plan is a fry factory.
Schooling contrast: neons want softer water. Bottom: corys. Plants: wisteria · Java fern. Cycle: fishless. Community budget: first community. Betta + male guppies = fin nipping war.
How to keep them
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Step 1
Pick males-only or accept fry
Three–six males is a show tank. Mixed sexes need 20 gal and a plan to rehome fry.
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Step 2
Harder water than neons
Guppies like GH. Do not force them into a soft Caridina tank. See Neo vs Caridina if you also keep shrimp.
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Step 3
Plant heavy for cover and nitrate export
Wisteria and moss. Fry vanish into Java moss. Adults still need open swim.
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Step 4
Feed better than bargain flakes
Color and fin quality collapse on junk food. Small meals 1–2×/day.
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Step 5
Weekly water changes
Livebearers pollute. 30–40% weekly in 10–20 gal.
Common problems
Clamped fins + white spots
Why: Ich after a chill.
Fix: Heat stable 26 °C; planted-safe treatment; quarantine new fish.
Males dying, females fine
Why: Harassment or poor male lines.
Fix: More plants; fewer males per female; better stock.
Tank full of fry, ammonia spike
Why: No plan for breeding.
Fix: Bigger changes; rehome; switch to males-only next time.
Shredded tails
Why: Fin nipping or décor.
Fix: No tetras that nip; no plastic plants; check betta if present.
Tank mates
- Good: corys, otos, cherry shrimp (adult guppies may eat tiny shrimplets).
- OK: neons if you compromise on GH (not ideal for either extreme).
- Bad: male bettas, large cichlids, goldfish.
- Endlers are cousins — similar care, smaller.
Gear for this species
TetraMin Tropical Flakes Fish Food, Nutritionally Balanced for Tropical Fish
Cám nổi classic cho cá cộng đồng nước ngọt — cá nhỏ đến trung bình.
Omega One Super Color Flakes Fish Food
Cám giàu omega-3 — màu sắc cá tự nhiên, chất lượng cao.
EHEIM Jager Aquarium Thermostat Heater 100W ( Pack of 1)
Jager truyền thống — chính xác nhiệt độ.
First community setup — Guppies are easy only with heat, minerals, and a fry plan
FAQ
Can I keep guppies without a heater?
Only if the room never drops. Fancy guppies crash when chilled. Use a heater.
Will plants stop all fry from surviving?
No. Plants hide some. You will still get babies in mixed tanks.
Males only — will they fight?
They display. Heavy plants reduce stress. Avoid overcrowding males in 5 gal.
Soft water shrimp tank + guppies?
Fighting parameters. Neo cherry can work; Caridina usually not. Separate goals.
How many in 10 gallons?
A bachelor group of 4–6 males, or skip mixed sexes.
Do they eat plants?
Occasionally nibble soft new growth. Wisteria grows faster than they eat.
Aqua Plants Hub Editorial
