Can Dickfeld's Julie and Twig Catfish (Farlowella) Live Together?
Dickfeld's Julie and Twig Catfish (Farlowella) are not recommended as tank mates due to conflicting pH requirements. 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 Dickfeld's Julie and Twig Catfish (Farlowella)?
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
Dickfeld's Julie is a moderately assertive species (6/10), while Twig Catfish (Farlowella) is peaceful (1/10). This notable difference means Dickfeld's Julie may occasionally assert dominance over Twig Catfish (Farlowella).
Dickfeld's Julie and Twig Catfish (Farlowella) both frequent the Bottom (Substrate) and Middle (Open Water) region of the setup. This overlap can increase competition for space, so providing ample room and cover is important to keep both species comfortable.
Water Parameters
The safe temperature window for both species falls between 23°C and 26°C. Aim for the midpoint of this range (around 24.5°C) for optimal comfort.
The pH requirements of Dickfeld's Julie (8–9) and Twig Catfish (Farlowella) (6–7.2) do not overlap, making it impossible to satisfy both species simultaneously.
For general hardness, the shared comfort zone is 10–10 dGH. Regular testing will ensure conditions stay within this range.
Tank Setup
To house Dickfeld's Julie and Twig Catfish (Farlowella) together, plan for an aquarium of at least 110 litres with a minimum length of 80 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). 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.
Why This Pairing Usually Fails in Practice
Dickfeld's Julie and Twig Catfish (Farlowella) 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.
Suitable Tank Sizes
Standard aquarium sizes large enough for both Dickfeld's Julie and Twig Catfish (Farlowella).
30 Gallon Breeder
40 Gallon Breeder
55 Gallon Standard
60 Gallon Breeder
75 Gallon Standard
90 Gallon Standard
Show 12 more tank sizes
Frequently Asked Questions
Can Dickfeld's Julie and Twig Catfish (Farlowella) live together?
No. This combination is not recommended. Key incompatibilities — such as critical behavioural conflicts — make cohabitation unsafe.
What size tank do Dickfeld's Julie and Twig Catfish (Farlowella) need?
A minimum of 110 litres (tank length at least 80 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 Dickfeld's Julie and Twig Catfish (Farlowella) together?
Keep the aquarium between 23°C and 26°C. A target of around 24.5°C sits comfortably within both species' preferred ranges.
Are Dickfeld's Julie or Twig Catfish (Farlowella) aggressive?
Dickfeld's Julie is moderately assertive (6/10) and Twig Catfish (Farlowella) is peaceful (1/10). The gap in aggression levels means the calmer fish may experience stress from the more assertive one.
What pH do Dickfeld's Julie and Twig Catfish (Farlowella) need?
Their pH requirements do not overlap. Dickfeld's Julie prefers 8–9, while Twig Catfish (Farlowella) needs 6–7.2. This makes them incompatible in the same water chemistry.
How do I manage Dickfeld's Julie's territorial behaviour?
Provide line-of-sight breaks using rocks, driftwood, and dense planting. A larger tank gives Dickfeld's Julie 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.
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
- May 6, 2026
- Last updated
- May 6, 2026
- Issues or corrections?
- Contact the editorial team
Related Comparisons
Dickfeld's Julie & Afra Cichlid
·
Dickfeld's Julie & African Jewel Cichlid
·
Dickfeld's Julie & Altolamprologus Calvus
·
Dickfeld's Julie & Altolamprologus Compressiceps
·
Dickfeld's Julie & Aurora Yellow Mbuna
·
Dickfeld's Julie & Black Diamond Cichlid
·
Twig Catfish (Farlowella) & Dwarf Cory (Tailspot Cory)
·
Twig Catfish (Farlowella) & Dwarf Petricola
·
Twig Catfish (Farlowella) & Golden Oto
·
Twig Catfish (Farlowella) & Otocinclus
·
Twig Catfish (Farlowella) & Pygmy Corydoras
·
Twig Catfish (Farlowella) & Royal Farlowella Catfish
·