Compatibility brief
Can Pea Puffer live with Royal pleco?
Caution. Check the issues below before buying.
Compatibility score
Profile confidence: low
Order of checkstank volume vs adults → predation mouth gap → temperament / fin nipping → shared water windows.
500L
Combined minimum footprint reference for these two species: about 500L (larger active fish often want more length).
Temperament gap (semi-aggressive vs peaceful) — needs space, structure, and careful observation, not a “drop and forget” mix.
Assessment details
Temperament difference
Top issuePea Puffer is semi-aggressive, while Royal pleco is peaceful. Expect chasing or stress unless the tank is large and heavily structured — monitor closely.
Compatible temperature range
Both fish can comfortably share similar water temperatures.
“Pea Puffer is semi-aggressive, while Royal pleco is peaceful”
Temperament difference
Next steps
Concrete changes, not "research more" filler.
- •Provide plenty of hiding spots and visual breaks so Royal pleco can escape if harassed.
- •Pea Puffer should be kept in a group of at least 6 for best health and behaviour.
- •Royal pleco reaches ~40cm: tank length and turning room matter more than the litre number. A tall, short tank of the same volume is not equivalent.
- Seriously Fish. Carinotetraodon travancoricus
Primary: aquarium size, water chemistry, behaviour, and compatibility (URL verified in upgrade script; recheck if site content changes).
- FishBase. Carinotetraodon travancoricus
Secondary: taxonomy, distribution, and maximum length in nature; cross-check with aquarium import lines and measured tank parameters.
- Wikipedia. Carinotetraodon travancoricus
Secondary: general species context; verify all husbandry numbers against a dedicated aquarium care sheet and your test kit, not a single table row.
- LiveAquaria. Royal (L-191) plecostomus (Panaque-type care sheet)
Primary: retailer care profile for the trade 'royal' / L-191: driftwood, tank size class, and feeding; listing may use Panaque sp. (L-191) as well as nigrolineatus in other lines. Confirm L-number with the seller when dollars matter.
- Planet Catfish. Panaque nigrolineatus (Cat-eLog species sheet)
Primary: community species sheet: wood requirement, import size, and the usual 'royal plec' name confusion across Panaque spp.
- FishBase. Panaque nigrolineatus
Secondary: natural distribution and maximum size; L-number vs museum name is still a moving target in the trade.
Try this next
Build the full stocking list with Pea Puffer + Royal pleco
Plan further
Check each species’ mates list, size the glass, then verify the full stock in the builder. Methodology explains how verdicts are produced.
Individual fish vary in personality. Fishori uses conservative hobby rules. Observe any new introduction closely, feed thoughtfully, and keep a quarantine or backup plan. This is not veterinary advice.
Profile data confidence: medium. Driven by the lower-confidence profile (Royal pleco): Typical care sources — trade names for this fish get mixed up, so verify the ID before you buy.