Compatibility brief
Can Angelfish live with Siamese Algae Eater?
Caution. Check the issues below before buying.
Angelfish + Siamese Algae Eater: Temperament difference. Angelfish is semi-aggressive, while Siamese Algae Eater is peaceful. This can work with adequate space and hiding spots, but monitor for bullying. Outcomes still depend on your tank shape, maintenance routine, and individual fish.
Compatibility score
Profile confidence: low
Order of checkstank volume vs adults → predation mouth gap → temperament / fin nipping → shared water windows.
150L
Combined minimum footprint reference for these two species: about 150L (larger active fish often want more length).
Temperament gap (semi-aggressive vs peaceful) — can work with space, structure, and careful observation, but not a “drop and forget” mix.
Assessment details
Temperament difference
Top issueAngelfish is semi-aggressive, while Siamese Algae Eater is peaceful. This can work with adequate space and hiding spots, but monitor for bullying.
Compatible temperature range
Both fish can comfortably share similar water temperatures.
“Angelfish is semi-aggressive, while Siamese Algae Eater is…”
Temperament difference
Next steps
Concrete changes, not "research more" filler.
- •Provide plenty of hiding spots and visual breaks so Siamese Algae Eater can escape if harassed.
Try instead
- →Provide plenty of hiding spots and visual breaks so Siamese Algae Eater can escape if harassed.
- Seriously Fish. Pterophyllum scalare
Primary: aquarium size, water chemistry, behaviour, and compatibility (URL verified in upgrade script; recheck if site content changes).
- FishBase. Pterophyllum scalare
Secondary: taxonomy, distribution, and maximum length in nature; cross-check with aquarium import lines and measured tank parameters.
- Wikipedia. Pterophyllum scalare
Secondary: general species context; verify all husbandry numbers against a dedicated aquarium care sheet and your test kit, not a single table row.
- LiveAquaria. Siamese Algae Eater (care profile)
Primary: retailer care sheet: tank size, water parameters, diet, and use in planted community tanks. Commercial copy may list C. siamensis; trade 'SAE' is often a mix of similar Crossocheilus. Identify the fish, not the bag label alone.
- Planet Catfish. Labeoninae (Crossocheilus and look-alikes)
Primary: Cat-eLog subfamily list for Crossocheilus and related Asian labeonins; the standard reference when separating SAE from Epalzeorhynchos 'flying foxes' and other doppelgängers.
- FishBase. Crossocheilus oblongus
Secondary: species-level taxonomy and size in the wild; reconcile with the fish in your tank, not every shop's name tag.
Try this next
Build the full stocking list with Angelfish + Siamese Algae Eater
Plan further
Try both species in the full-stock tank check, or open either fish profile for mates lists. 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 (Siamese Algae Eater): Based on typical aquarium care sources; trade names can be ambiguous, so details may vary between setups.