Can Gold Nugget Pleco (L018) and Violet Goby (Dragon Goby) Live Together?

🔴Not Recommended

Gold Nugget Pleco (L018) and Violet Goby (Dragon Goby) are not recommended as tank mates due to incompatible water types. Housing these species together is likely to result in stress, health problems, or direct harm to one or both fish.


At a Glance

Gold Nugget Pleco (L018)

Baryancistrus xanthellus

Violet Goby (Dragon Goby)

Gobioides broussonnetii

🐠Family Group
Gold Nugget Pleco (L018)
Catfish
Violet Goby (Dragon Goby)
Gobies & Gudgeons
Temperament
Gold Nugget Pleco (L018)
Semi-Aggressive (6/10)
Violet Goby (Dragon Goby)
Peaceful (2/10)
Temperature
✓ Compatible
Gold Nugget Pleco (L018)
27–32°C
Violet Goby (Dragon Goby)
23–28°C
pH Range
✓ Compatible
Gold Nugget Pleco (L018)
6–7.5
Violet Goby (Dragon Goby)
7.5–8.5
Hardness (dGH)
✓ Compatible
Gold Nugget Pleco (L018)
2–12
Violet Goby (Dragon Goby)
12–25
Water Type
✗ No overlap
Gold Nugget Pleco (L018)
Freshwater Only
Violet Goby (Dragon Goby)
Brackish Required
Flow Preference
✓ Compatible
Gold Nugget Pleco (L018)
High
Violet Goby (Dragon Goby)
Moderate
Min Tank Volume
Combined: 300 L
Gold Nugget Pleco (L018)
250 L
Violet Goby (Dragon Goby)
200 L
Swimming Level
Shared: 1 zone
Gold Nugget Pleco (L018)
Bottom
Violet Goby (Dragon Goby)
Bottom
🏷️Behavior Tags
Gold Nugget Pleco (L018)
Territorial (Defends specific area)Aggressive to same species/look-alikesShy / Slow Moving (Easily Stressed)
Violet Goby (Dragon Goby)
NocturnalDigger (Disturbs Substrate)Shy / Slow Moving (Easily Stressed)

Behaviour & Temperament

Gold Nugget Pleco (L018) is a moderately assertive species (6/10), while Violet Goby (Dragon Goby) is peaceful (2/10). This notable difference means Gold Nugget Pleco (L018) may occasionally assert dominance over Violet Goby (Dragon Goby).

Gold Nugget Pleco (L018) and Violet Goby (Dragon Goby) 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.

Worth noting: Violet Goby (Dragon Goby) 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 27°C and 28°C. Aim for the midpoint of this range (around 27.5°C) for optimal comfort.

Both fish can tolerate a pH between 7.5 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 12–12 dGH. Regular testing will ensure conditions stay within this range.

Crucially, these species require different water types — one needs freshwater while the other requires brackish conditions. This is a hard barrier to keeping them together. An aquarium test kit is recommended for monitoring.

Tank Setup

To house Gold Nugget Pleco (L018) and Violet Goby (Dragon Goby) together, plan for an aquarium of at least 300 litres with a minimum length of 120 cm. This accounts for the larger species' space requirements with an additional 20 % buffer to reduce territorial tension.

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: Driftwood (Digestion/Hiding), Smooth Gravel (Sensitive Barbels), Established Algae (Otocinclus), Sand (Sifters), Shells (Breeding/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.

Find the right tank equipment

Browse tanks, décor, and equipment suited for this setup.

Frequently Asked Questions

Can Gold Nugget Pleco (L018) and Violet Goby (Dragon Goby) live together?

No. This combination is not recommended. Key incompatibilities — such as different water type needs — make cohabitation unsafe.

What size tank do Gold Nugget Pleco (L018) and Violet Goby (Dragon Goby) need?

A minimum of 300 litres (tank length at least 120 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 Gold Nugget Pleco (L018) and Violet Goby (Dragon Goby) together?

Keep the aquarium between 27°C and 28°C. A target of around 27.5°C sits comfortably within both species' preferred ranges.

Are Gold Nugget Pleco (L018) or Violet Goby (Dragon Goby) aggressive?

Gold Nugget Pleco (L018) is moderately assertive (6/10) and Violet Goby (Dragon Goby) is peaceful (2/10). The gap in aggression levels means the calmer fish may experience stress from the more assertive one.

What pH do Gold Nugget Pleco (L018) and Violet Goby (Dragon Goby) need?

Both species overlap in the 7.5–7.5 pH range. Consistency is key — avoid sudden swings, and test regularly to stay within this window.

How do I manage Gold Nugget Pleco (L018)'s territorial behaviour?

Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Gold Nugget Pleco (L018) 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 Violet Goby (Dragon Goby) being nocturnal affect compatibility?

Violet Goby (Dragon Goby) 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 Violet Goby (Dragon Goby) during evening hours.


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