Start with the school count and the presented fish
A harlequin rasbora vet note starts with the school: how many fish are in the group, how many showed the sign that worried you, and which fish was presented, described by size and the shape of its black wedge. Record the concern and its first appearance, then the vet's findings on body fullness, fin condition, gill movement, and the copper colouring around the wedge. Keep the vet's examination findings separate from your home account of the school, because rasboras school tightly when stressed by capture and may look deceptively well in a container while the home group has been loose, pale, and picking at food for days.
Water softness and tannins form part of this record
Water character belongs in a harlequin rasbora note because this species comes from soft, gently stained water and vets often discuss hardness alongside the fish. Copy the temperature, pH, and hardness figures you reported if you had them, and any test the clinic ran. Record instructions about water preparation, leaf litter or botanicals if the vet raised them, and feeding changes in the vet's wording. Note whether the vet linked the problem to water at all or pointed instead at stocking, a new arrival, or bullying from larger tankmates. That reasoning, preserved, stops a later keeper of the notes from re-litigating a settled question at the next visit.
School-wide instructions and the named watch point
Instructions for a harlequin rasbora should be written at school level. Record what the vet advised for the whole group, whether that was observation only, a water routine change, separation of one fish, or bringing in another sample fish if signs spread. Copy the watch point exactly: a second fish losing its wedge definition, the school refusing food together, or the presented fish failing to rejoin the group. Add any note about the smallest or lowest-ranking fish and feeding reach, because in a rasbora school the fish that fades first is often simply the one being outcompeted, and the vet's feeding fix for that is easy to forget among bigger instructions.
Watch the school reform in the days at home
Home follow-up for a harlequin rasbora tracks the school as a shape. Log whether the group reformed into its usual tight, angled formation, whether the presented fish held position inside it, and whether colour and wedge contrast strengthened over the first days. Note feeding as a school event: all rising together, or the same one or two fish hanging back at the plants. Record water changes and results on the vet's schedule. If the watch point occurs, your dated school log shows whether it arrived as a sudden group change or a slow fade, which is the first distinction the vet will want on the phone.
Keep rasbora visits as one school history file
Harlequin rasbora visit notes should be kept as one school history, indexed by concern, finding, and the water figures of the day, with a whole-school photo attached to each visit taken from the same angle. Retain every visit while the school is kept; small schooling fish produce brief, overlapping episodes and the continuity between them is the record's real value. Additions to the school, losses, and water preparation changes belong in the same file in order. Kept as that continuous school file, KinsLe can hold each rasbora visit, photo, and water note together in the Pet Passport.