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Water Onion With Fish Guides

These pairing guides focus on how Water Onion handles real fish pressure, shared water conditions, and the practical layout needs that matter in a mixed planted tank.

PlacementBackground
LightModerate
FlowModerate (Standard)
Water TypeFreshwater Only
Showing 25 - 48 of 736 Guides

Twig Catfish

Farlowella vittata

Catfish
Strong Fit
22.5 cmPeacefulMid-level, Bottom110 L min

Tiger Shovelnose Catfish

Pseudoplatystoma tigrinum

Catfish
Strong Fit
120 cmSemi-AggressiveBottom3800 L min

Tiger Pleco (L002)

Panaqolus sp. L002

Catfish
Strong Fit
11 cmMostly PeacefulBottom75 L min

Starlight Bristlenose Pleco (L183)

Ancistrus dolichopterus

Catfish
Strong Fit
12 cmMostly PeacefulBottom75 L min

Skunk Cory

Corydoras arcuatus

Catfish
Strong Fit
5 cmPeacefulBottom60 L min

Royal Farlowella Catfish

Sturisoma panamense

Catfish
Strong Fit
25 cmPeacefulMid-level, Bottom150 L min

Prionotos Cory (Scleromystax)

Scleromystax prionotos

Catfish
Strong Fit
6 cmPeacefulBottom90 L min

Petricola Catfish

Synodontis petricola

Catfish
Strong Fit
11.5 cmPeacefulBottom110 L min

Parallel Cory

Corydoras parallelus

Catfish
Strong Fit
5.5 cmPeacefulBottom60 L min

Candy Striped Pleco (L015)

Peckoltia vittata

Catfish
Strong Fit
12 cmMostly PeacefulBottom100 L min

Popondetta Blue-eye

Pseudomugil connieae

Rainbowfish
Strong Fit
5 cmPeacefulSurface, Mid-level55 L min

Pacific Blue Eye

Pseudomugil signifer

Rainbowfish
Strong Fit
5 cmPeacefulSurface, Mid-level60 L min

New Guinea Tigerfish

Datnioides campbelli

Oddballs
Strong Fit
35 cmAggressiveMid-level, Bottom600 L min

Olive Nerite Snail

Neritina reclivata

Invertebrates
Strong Fit
2.5 cmPeacefulBottom, Mid-level, Surface19 L min

Ninja Shrimp

Caridina serratirostris

Invertebrates
Strong Fit
3 cmPeacefulBottom, Mid-level19 L min

Pearl Danio

Danio albolineatus

Cyprinids
Strong Fit
6.5 cmPeacefulSurface, Mid-level75 L min

Peacock Bass Ocellaris

Cichla ocellaris

Cichlids - South American
Strong Fit
70 cmAggressiveMid-level, Surface1500 L min

Peacock Bass Monoculus

Cichla monoculus

Cichlids - South American
Strong Fit
60 cmAggressiveSurface, Mid-level1000 L min

Sulphur Crest Lithobates

Otopharynx lithobates

Cichlids - African
Strong Fit
16 cmSemi-AggressiveMid-level, Bottom250 L min

Vestitus Otocinclus

Otocinclus vestitus

Catfish
Strong Fit
4 cmPeacefulMid-level, Bottom38 L min

Pungas Catfish

Pangasius pangasius

Catfish
Strong Fit
150 cmMostly PeacefulMid-level, Bottom5000 L min

Pangasius nasutus (Long-Nosed Pangasius)

Pangasius nasutus

Catfish
Strong Fit
90 cmMostly PeacefulMid-level, Bottom4000 L min

Spot Pangasius

Pangasius larnaudii

Catfish
Strong Fit
130 cmMostly PeacefulMid-level, Bottom4000 L min

Neon Blue Cichlid

Paracyprichromis nigripinnis

Cichlids - African
Strong Fit
11 cmMostly PeacefulMid-level, Bottom150 L min