Can Neon Blue Goby and Wels Catfish (European Catfish) Live Together?
Neon Blue Goby and Wels Catfish (European Catfish) are not recommended as tank mates due to piscivorous fish will prey on nano-sized tank mates.. Housing these species together is likely to result in stress, health problems, or direct harm to one or both fish.
At a Glance
Can your tank handle Neon Blue Goby and Wels Catfish (European Catfish)?
Compatibility is only part of the answer. Test both fish with your real tank size, current stock, and maintenance needs to see if you have enough space and a safe stocking level before you add them.
Behaviour & Temperament
Neon Blue Goby is a generally mild-mannered species (3/10), while Wels Catfish (European Catfish) is semi-aggressive (8/10). This notable difference means Wels Catfish (European Catfish) may occasionally assert dominance over Neon Blue Goby.
Neon Blue Goby and Wels Catfish (European Catfish) both frequent the Bottom (Substrate) region of the setup. This overlap can increase competition for space, so providing ample room and cover is important to keep both species comfortable.
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: Two territorial species may clash over territory, especially in smaller tanks.
Worth noting: Wels Catfish (European Catfish) is nocturnal and will be most active after lights-out, naturally reducing daytime encounters.
Water Parameters
The safe temperature window for both species falls between 22°C and 25°C. Aim for the midpoint of this range (around 23.5°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 5–12 dGH. Regular testing will ensure conditions stay within this range.
Tank Setup
To house Neon Blue Goby and Wels Catfish (European Catfish) together, plan for an aquarium of at least 10000 litres with a minimum length of 400 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: Established Algae (Otocinclus), Smooth Gravel (Sensitive Barbels), Sand (Sifters), Driftwood (Digestion/Hiding). Meeting these requirements will help both species thrive.
Both species do well with high (river/stream) water movement, so a standard filtration setup rated for the tank volume should suffice.
Why This Pairing Usually Fails in Practice
Neon Blue Goby and Wels Catfish (European Catfish) 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.
Frequently Asked Questions
Can Neon Blue Goby and Wels Catfish (European Catfish) live together?
No. This combination is not recommended. Key incompatibilities — such as critical behavioural conflicts — make cohabitation unsafe.
What size tank do Neon Blue Goby and Wels Catfish (European Catfish) need?
A minimum of 10000 litres (tank length at least 400 cm) is recommended. This provides enough space for both species to establish their own areas and reduces the likelihood of territorial disputes.
What water temperature is best for Neon Blue Goby and Wels Catfish (European Catfish) together?
Keep the aquarium between 22°C and 25°C. A target of around 23.5°C sits comfortably within both species' preferred ranges.
Are Neon Blue Goby or Wels Catfish (European Catfish) aggressive?
Neon Blue Goby is generally mild-mannered (3/10) and Wels Catfish (European Catfish) is semi-aggressive (8/10). The gap in aggression levels means the calmer fish may experience stress from the more assertive one.
What pH do Neon Blue Goby and Wels Catfish (European Catfish) need?
Both species overlap in the 6.5–7.5 pH range. Consistency is key — avoid sudden swings, and test regularly to stay within this window.
How do I manage Neon Blue Goby's territorial behaviour?
Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Neon Blue Goby space to claim a territory without encroaching on the other fish's area. Adding décor that divides the tank into distinct zones works especially well.
Does Wels Catfish (European Catfish) being nocturnal affect compatibility?
Wels Catfish (European Catfish) is most active after lights-out, which naturally reduces daytime encounters with its tank mate. This can actually be beneficial, as both fish get undisturbed time to feed and explore. Just ensure food reaches Wels Catfish (European Catfish) during evening hours.
Shared setup supplies
We may earn from qualifying purchases
Guidarium Editorial Desk
Reviewed against Guidarium care, stocking, and compatibility standards. Read the editorial policy.
- Last reviewed
- Editorial desk review
- Last updated
- Editorial desk review
- Issues or corrections?
- Contact the editorial team
Related Comparisons
Neon Blue Goby & Peacock Gudgeon
·
Neon Blue Goby & Purple Spotted Gudgeon
·
Neon Blue Goby & Bumblebee Goby (Brackish)
·
Neon Blue Goby & Empire Gudgeon
·
Neon Blue Goby & Violet Goby (Dragon Goby)
·
Neon Blue Goby & Angelicus Pleco L073
·
Wels Catfish (European Catfish) & Achara Catfish
·
Wels Catfish (European Catfish) & Asian Upside Down Catfish
·
Wels Catfish (European Catfish) & Brown Bullhead Catfish
·
Wels Catfish (European Catfish) & Bullseye Catfish
·
Wels Catfish (European Catfish) & Domino Synodontis
·
Wels Catfish (European Catfish) & Freshwater Shark (Wallago)
·