Can Agassiz's Dwarf Cichlid and Marble Goby Live Together?

Possible with Caution

Keeping Agassiz's Dwarf Cichlid and Marble Goby together is possible but requires caution due to potential behavioral clashes. Provide a spacious tank of at least 600 litres with plenty of hiding spots to reduce stress. Monitor behaviour closely, especially during the first few weeks.


At a Glance

Agassiz's Dwarf Cichlid

Apistogramma agassizii

Marble Goby

Oxyeleotris marmorata

🐠Family Group
Agassiz's Dwarf Cichlid
Cichlids - South American
Marble Goby
Gobies & Gudgeons
Temperament
Agassiz's Dwarf Cichlid
Semi-Aggressive (5/10)
Marble Goby
Aggressive (7/10)
Temperature
βœ“ Compatible
Agassiz's Dwarf Cichlid
24–29Β°C
Marble Goby
22–28Β°C
pH Range
βœ“ Compatible
Agassiz's Dwarf Cichlid
4.5–7
Marble Goby
6.5–8
Hardness (dGH)
βœ“ Compatible
Agassiz's Dwarf Cichlid
1–8
Marble Goby
5–20
Water Type
βœ“ Compatible
Agassiz's Dwarf Cichlid
Freshwater Only
Marble Goby
Brackish Tolerant
Flow Preference
βœ“ Compatible
Agassiz's Dwarf Cichlid
Low
Marble Goby
Low
Min Tank Volume
Combined: 600 L
Agassiz's Dwarf Cichlid
60 L
Marble Goby
600 L
Swimming Level
Shared: 1 zone
Agassiz's Dwarf Cichlid
Bottom
Marble Goby
Bottom
🏷️Behavior Tags
Agassiz's Dwarf Cichlid
Territorial (Defends specific area)Shrimp EaterFry PredatorShy / Slow Moving (Easily Stressed)
Marble Goby
Piscivore (Eats small/nano fish)NocturnalShrimp EaterTerritorial (Defends specific area)
Stocking calculator

Can your tank handle Agassiz's Dwarf Cichlid and Marble Goby?

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.

Agassiz's Dwarf Cichlid
Marble Goby
Test both in my tank

Behaviour & Temperament

Agassiz's Dwarf Cichlid is a moderately assertive species (5/10), while Marble Goby is semi-aggressive (7/10). This modest difference means Marble Goby may occasionally assert dominance over Agassiz's Dwarf Cichlid.

Agassiz's Dwarf Cichlid and Marble 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.

Additional behavioural considerations to keep in mind: Two territorial species may clash over territory, especially in smaller tanks.

Worth noting: Marble Goby is nocturnal and will be most active after lights-out, naturally reducing daytime encounters.

To improve the chances of a peaceful coexistence in this community tank: Provide a significantly larger tank (at least 50% more volume than the minimum) to allow both Agassiz's Dwarf Cichlid and Marble Goby to establish separate territories. Add plenty of line-of-sight breaks using driftwood, rocks, and dense planting to reduce territorial confrontations.

Water Parameters

The safe temperature window for both species falls between 24Β°C and 28Β°C. Aim for the midpoint of this range (around 26.0Β°C) for optimal comfort.

Both fish can tolerate a pH between 6.5 and 7. Maintaining a stable value within this band is more important than hitting an exact number.

For general hardness, the shared comfort zone is 5–8 dGH. Regular testing will ensure conditions stay within this range.

Tank Setup

To house Agassiz's Dwarf Cichlid and Marble Goby together, plan for an aquarium of at least 600 litres with a minimum length of 180 cm. This recommendation combines the stricter species minimums with a community-load allowance so the pairing has realistic long-term space and filtration headroom.

Because this pairing requires extra vigilance, include plenty of hiding spots β€” caves, driftwood, and dense plant clusters β€” so the less dominant fish can retreat when needed.

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

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

Suitable Tank Sizes

Standard aquarium sizes large enough for both Agassiz's Dwarf Cichlid and Marble Goby.

Frequently Asked Questions

Can Agassiz's Dwarf Cichlid and Marble Goby live together?

They can coexist, but the pairing requires careful monitoring. Provide ample space (at least 600 litres), plenty of hiding spots, and watch for signs of stress or aggression.

What size tank do Agassiz's Dwarf Cichlid and Marble Goby need?

A minimum of 600 litres (tank length at least 180 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 Agassiz's Dwarf Cichlid and Marble Goby together?

Keep the aquarium between 24Β°C and 28Β°C. A target of around 26.0Β°C sits comfortably within both species' preferred ranges.

Are Agassiz's Dwarf Cichlid or Marble Goby aggressive?

Agassiz's Dwarf Cichlid is moderately assertive (5/10) and Marble Goby is semi-aggressive (7/10). Their similar temperaments generally lead to a peaceful coexistence.

What pH do Agassiz's Dwarf Cichlid and Marble Goby need?

Both species overlap in the 6.5–7 pH range. Consistency is key β€” avoid sudden swings, and test regularly to stay within this window.

How do I manage Agassiz's Dwarf Cichlid's territorial behaviour?

Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Agassiz's Dwarf Cichlid space to claim a territory without encroaching on the other fish's area. Adding dΓ©cor that divides the tank into distinct zones works especially well.

Does Marble Goby being nocturnal affect compatibility?

Marble 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 Marble Goby during evening hours.


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