Can Goby Pleco (Pitbull Pleco) and Peacock Bass Ocellaris Live Together?

Goby Pleco (Pitbull Pleco) is a peaceful species (1/10), while Peacock Bass Ocellaris is semi-aggressive (7/10). This notable difference means Peacock Bass Ocellaris may occasionally assert dominance over Goby Pleco (Pitbull Pleco).

Large aggression gap (6 points) between Goby Pleco (Pitbull Pleco) and Peacock Bass Ocellaris increases stress risk for the more peaceful fish.

In terms of spatial distribution, Goby Pleco (Pitbull Pleco) prefers the Bottom (Substrate) zone, whereas Peacock Bass Ocellaris occupies the Middle (Open Water) and Top (Surface) zones. Because they use different levels of the water column, territorial disputes are less likely and the tank will appear more balanced.

There is a critical concern: the Nano / Bite-sized (Predation Risk) behaviour of one fish directly conflicts with the Piscivore (Eats small/nano fish) trait of the other — piscivorous fish will prey on nano-sized tank mates..

Additional behavioural considerations to keep in mind: Hyperactive swimmers can stress shy, slow-moving species through constant motion.

Worth noting: Goby Pleco (Pitbull Pleco) is nocturnal and will be most active after lights-out, naturally reducing daytime encounters. Also, Peacock Bass Ocellaris is a known jumper, so a tight-fitting lid is essential.

The safe temperature window for both species falls between 25°C and 26°C. Aim for the midpoint of this range (around 25.5°C) for optimal comfort.

Both fish can tolerate a pH between 6.5 and 7.5. Maintaining a stable value within this band is more important than hitting an exact number.

For general hardness, the shared comfort zone is 5–15 dGH. Regular testing will ensure conditions stay within this range.

To house Goby Pleco (Pitbull Pleco) and Peacock Bass Ocellaris together, plan for an aquarium of at least 1500 litres with a minimum length of 240 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: Sand (Sifters), Driftwood (Digestion/Hiding), Established Algae (Otocinclus), Smooth Gravel (Sensitive Barbels). Meeting these requirements will help both species thrive.

Both species do well with moderate (standard) water movement, so a standard filtration setup rated for the tank volume should suffice.

Goby Pleco (Pitbull Pleco) and Peacock Bass Ocellaris 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.