Can Green Neon Tetra and Spotfin Goby Cichlid Live Together?

Green Neon Tetra is a peaceful species (0/10), while Spotfin Goby Cichlid is moderately assertive (6/10). This notable difference means Spotfin Goby Cichlid may occasionally assert dominance over Green Neon Tetra.

Large aggression gap (6 points) between Green Neon Tetra and Spotfin Goby Cichlid increases stress risk for the more peaceful fish.

In terms of spatial distribution, Green Neon Tetra prefers the Middle (Open Water) zone, whereas Spotfin Goby Cichlid occupies the Bottom (Substrate) zone. Because they use different levels of the water column, territorial disputes are less likely and the tank will appear more balanced.

The safe temperature window for both species falls between 24°C and 27°C. Aim for the midpoint of this range (around 25.5°C) for optimal comfort.

The pH requirements of Green Neon Tetra (4.5–6.5) and Spotfin Goby Cichlid (8–9) do not overlap, making it impossible to satisfy both species simultaneously.

Hardness requirements are incompatible: Green Neon Tetra needs 1–8 dGH while Spotfin Goby Cichlid requires 10–25 dGH.

To house Green Neon Tetra and Spotfin Goby Cichlid together, plan for an aquarium of at least 75 litres with a minimum length of 60 cm. This recommendation combines the stricter species minimums with a community-load allowance so the pairing has realistic long-term space and filtration headroom.

Providing a mix of open swimming space and sheltered areas with rocks, driftwood, or plants will keep both species comfortable and allow natural behaviour.

Specific environmental needs for this combination include: Leaf Litter/Blackwater, Plants - Densely covered, Plants - Floating, Sand (Sifters), Smooth Gravel (Sensitive Barbels). Meeting these requirements will help both species thrive.

Green Neon Tetra prefers Low (Still Water) flow while Spotfin Goby Cichlid needs High (River/Stream) flow. Consider positioning filter outlets and using baffles to create zones of different current intensity within the same tank.

Green Neon Tetra and Spotfin Goby Cichlid are the kind of pair that can look acceptable in a shop but become a maintenance problem at home. The main risk is not a single number in the chart; it is the way incompatible behavior, water needs, or pressure on space compounds over time once both fish are established in the same tank.