Deepen the sand where it burrows
An elderly kuhli loach spends daylight buried or threaded through cover, emerging at night to sift the bottom, so the floor of its home corner decides its comfort. Build the sand deeper there — enough for this slender fish to submerge its whole body without effort — and make sure it is fine and smooth, since a kuhli's skin is nearly scaleless and old skin abrades on coarse gravel. Rake through for buried sharp decor when you set it up. A senior kuhli that can vanish into soft sand in seconds rests properly; one stranded on hard, thin substrate stays stressed and feeds poorly.
Hiding places that feel like the riverbank
Beyond burrowing, an elderly kuhli loach needs low, snug architecture: smooth ceramic tubes, half coconut shells, and a drift of leaf litter layered over its corner so it can move from cover to cover without crossing open ground. Arrange these into a connected quarter rather than scattering single hides around the tank, because this fish travels by slipping between shelters. Avoid moving its established hides during maintenance; a kuhli orients by its burrow and shelter map, and an elderly one whose landmarks vanish nightly spends its active hours stressed instead of feeding.
Seal the escapes an old kuhli still finds
Age does not cure a kuhli loach's escape artistry — a startled or exploring senior can still thread itself through a filter gap or lid corner. Cover the intake with fine mesh or foam it cannot squeeze past, seal the lid's cut-outs, and after any tank work, count your kuhlis or check their corner before assuming all is well. Keep the water level a little below the rim as a second line of defence. These checks take a minute and prevent the particular heartbreak of losing an old fish to a dry floor overnight.
Night feeding at the burrow's edge
An elderly kuhli loach eats on the night shift, so home care should deliver dinner to its door. Just after lights-out, place small sinking foods beside its burrow entrance and along its shelter line, pre-softened so an old mouth can work them over. Feed the daytime fish their fill earlier so they are sluggish by the time the kuhli emerges. In the morning, siphon the corner lightly for leftovers only on some days, alternating so the senior's home is not excavated daily — uneaten food left once is a smaller harm than a burrow destroyed nightly.
Writing down a fish you rarely see
An elderly kuhli loach can go unseen for days while thriving, which makes written care notes unusually valuable. Record where its burrow corner is, when it is fed, which foods vanish by morning, and roughly how often you glimpse it active, so a sudden change in that pattern registers as a signal rather than a shrug. Keeping those observations in a KinsLe Pet Passport turns this hidden fish's habits into a portable record that anyone feeding the tank can follow in the dark.