Candidate
Pygmy corydoras
Corydoras pygmaeus
A small social cory for compact but adequately long mature tanks.
- Adult
- 2.5–3 cm
- Minimum
- 45 L · 60 cm
- Group
- 8
Condition-led guide · reviewed 2026-07-31
Bottom-dwelling fish by aquarium footprint
Floor area, social group and territory matter more than spare litres when choosing bottom dwellers.
Selection rules
What made the shortlist
- Compare the profile's minimum length with the actual base dimensions.
- Allocate a full same-species group before adding another bottom species.
- Use substrate, caves and flow designed for the selected animal.
Real photographed species
Options worth researching
Sketch each cave, feeding area and route across the base before treating the bottom as unused space.
Candidate
Panda corydoras
Corydoras panda
A cooler-leaning group option for fine substrate.
- Adult
- 5–6 cm
- Minimum
- 75 L · 75 cm
- Group
- 6
Candidate
Peppered corydoras
Corydoras paleatus
A robust cooler-water floor group for larger footprints.
- Adult
- 5–7 cm
- Minimum
- 75 L · 80 cm
- Group
- 6
Candidate
Kuhli loach
Pangio kuhlii
A crevice-using social loach that needs a secure covered tank.
- Adult
- 8–12 cm
- Minimum
- 75 L · 75 cm
- Group
- 6
Candidate
Hillstream loach
Sewellia lineolata
A specialist for high oxygen, flow and mature grazing surfaces.
- Adult
- 5–6 cm
- Minimum
- 75 L · 75 cm
- Group
- 3
Candidate
Bristlenose pleco
Ancistrus cirrhosus
A solitary armoured catfish option when waste and wood are planned.
- Adult
- 10–14 cm
- Minimum
- 100 L · 80 cm
- Group
- 1
Common mismatch
Fish to rule out for this brief
Different bottom dwellers do not automatically share one social group, and filtration cannot manufacture territory.
Think again
Common pleco
Hypostomus plecostomus
It outgrows ordinary community footprints.
- Adult
- 30–50 cm
- Minimum
- 450 L · 180 cm
- Group
- 1
Think again
Clown loach
Chromobotia macracanthus
A proper adult group needs a very large 180 cm home.
- Adult
- 25–35 cm
- Minimum
- 450 L · 180 cm
- Group
- 5
Think again
Yoyo loach
Botia almorhae
Its active social group overwhelms compact floor plans.
- Adult
- 12–16 cm
- Minimum
- 180 L · 120 cm
- Group
- 5