Describe the school the sitter will see
Written instructions for harlequin rasboras should paint the normal picture first. A settled school holds the middle water in a loose, shimmering group, copper bodies flashing their dark triangular wedge as they turn together, drifting toward cover when a shadow passes and returning within minutes. The note should give the school size and explain that tight schooling is security behaviour, not illness, while a single rasbora parked alone in a corner is the odd one out worth mentioning. Harlequins are gentle community fish, so the instructions also name any tankmates whose feeding or behaviour the sitter should distinguish from the rasboras' own calm routine.
Small food for small, dainty mouths
Feeding directions for harlequin rasboras centre on portion and particle size. These fish take small flakes, crushed crumb, and micro-pellets from the upper water in brief, polite passes; a pre-measured daily pinch, scattered so the whole school shares, is the instruction to write. Because rasboras do not gorge dramatically, sitters misjudge them as uninterested and add more — the note should forbid second helpings and explain that a school rising eagerly, eating for a minute or two, and then dispersing has been fed correctly. Any frozen or live treats the owner uses can be scheduled once mid-trip in a set amount, or sensibly skipped until the owner returns.
Soft water, gentle flow, no experiments
Water instructions for harlequin rasboras protect stability above all. Rasboras come from soft, slow, leaf-stained waters and thrive on consistency, so the owner completes a partial water change and filter-media rinse in tank water before the trip, and the sitter's written duties stop at observation: flow gentle, thermometer steady, water level topped up with conditioned water if it falls. The note should explicitly rule out mid-holiday adjustments — no added conditioners beyond top-ups, no filter-media replacement, no chasing ideal numbers with test kits the sitter has never used. A photograph of the thermometer's normal reading, taped beside the tank, helps more than a paragraph of figures.
Light, cover, and the room around the tank
Environment instructions for harlequin rasboras cover the dim world they prefer. Floating plants and shaded corners keep these fish confident and coloured; the note should direct the sitter to leave cover plants in place even if they drift, keep the light on its existing timer, and avoid sudden room changes such as bright overhead lights switched on at midnight for a check — a torch-free, daytime visit suits them better. The lid stays closed between feedings, since a startled school darts upward as one. If the household will be noisy with visitors, a line asking that gatherings happen away from the tank is a reasonable, fish-first request.
Colour as the sitter's health gauge
Monitoring instructions for harlequin rasboras give the sitter a simple gauge: colour and company. Rich copper with a crisp black wedge, in a group that feeds together, means all is well. Washed-out, pale fish across the whole school, individuals hanging apart, gasping at the surface, or white spots and frayed fins on several fish all merit a same-day message to the owner, with a photo against the light. An aquatic vet or trusted fish shop is the escalation if fish die or the whole school changes at once. Encourage the sitter to report pale colour early rather than wait — in rasboras, fading is information. With a KinsLe Care Pass, your sitter holds temporary access to these rasbora notes, so the pinch size, timer settings and colour warnings are never left to guesswork.