Black Phantom Tetra
Hyphessobrycon megalopterus
Characins
4.5 cmPeacefulMid-level60 L min
Back to Undulata
Undulata With Fish Guides
These pairing guides focus on how Undulata handles real fish pressure, shared water conditions, and the practical layout needs that matter in a mixed planted tank.
PlacementMidground
LightLow
FlowLow (Still Water)
Water TypeFreshwater Only
Showing 121 - 144 of 736 Guides
Strong Fit
Betta Smaragdina
Betta smaragdina
Anabantoids
6 cmSemi-AggressiveSurface, Mid-level20 L min
Betta Macrostoma
Betta macrostoma
Anabantoids
11 cmSemi-AggressiveSurface, Mid-level, Bottom80 L min
Betta Imbellis
Betta imbellis
Anabantoids
6 cmMostly PeacefulSurface, Mid-level38 L min
Banded Gourami
Trichogaster fasciata
Anabantoids
10 cmMostly PeacefulSurface, Mid-level110 L min
Marbled Hatchetfish
Carnegiella strigata
Characins
4 cmPeacefulSurface60 L min
African Butterfly Fish
Pantodon buchholzi
Oddballs
12 cmSemi-AggressiveSurface80 L min
Beckford's Pencilfish
Nannostomus beckfordi
Characins
6.5 cmPeacefulSurface, Mid-level60 L min
Chili Rasbora
Boraras brigittae
Cyprinids
2 cmPeacefulMid-level, Surface19 L min
Japanese Ricefish (Medaka)
Oryzias latipes
Killifish
4 cmPeacefulSurface19 L min
Amazon Leaf Fish
Monocirrhus polyacanthus
Other
8 cmPeacefulMid-level, Surface75 L min
Threadfin Rainbowfish
Iriatherina werneri
Rainbowfish
5 cmPeacefulSurface, Mid-level60 L min
Least Killifish (Heterandria)
Heterandria formosa
Livebearers
3.5 cmPeacefulSurface, Mid-level, Bottom19 L min
Guppy
Poecilia reticulata
Livebearers
5 cmPeacefulSurface, Mid-level38 L min
Golden Wonder Killifish
Aplocheilus lineatus
Killifish
10 cmSemi-AggressiveSurface75 L min
Gardner's Killifish
Fundulopanchax gardneri
Killifish
6.5 cmMostly PeacefulSurface, Mid-level38 L min
Clown Killifish
Epiplatys annulatus
Killifish
3.5 cmPeacefulSurface19 L min
Thai Micro Crab
Limnopilos naiyanetri
Invertebrates
1.5 cmPeacefulBottom19 L min
Three Spot Gourami (Blue/Gold/Opaline)
Trichopodus trichopterus
Anabantoids
13 cmSemi-AggressiveSurface, Mid-level110 L min
Sparkling Gourami
Trichopsis pumila
Anabantoids
4 cmMostly PeacefulSurface, Mid-level, Bottom38 L min
Pearl Gourami
Trichopodus leerii
Anabantoids
12 cmMostly PeacefulSurface, Mid-level110 L min
Paradise Fish
Macropodus opercularis
Anabantoids
10 cmAggressiveSurface, Mid-level75 L min
Leopard Bushfish (Ctenopoma)
Ctenopoma acutirostre
Anabantoids
15 cmMostly PeacefulMid-level, Bottom110 L min
Honey Gourami
Trichogaster chuna
Anabantoids
5 cmPeacefulSurface, Mid-level38 L min