Small fish, specific paperwork
A scarlet badis is barely two centimetres long, but its records carry more specifics than most larger fish: it often eats only live or frozen food, the males hold and defend individual territories, and it fades fast in unsuitable water. After a move, update its details at your fish shop and with any aquatic vet, redirect its food deliveries, and rewrite the tank paperwork — because for this species the written notes are frequently the only thing standing between a covering sitter and a fish that quietly starves in a tank that looks fully fed.
Put the feeding arrangement in writing at the new address
Many scarlet badis ignore flakes and pellets entirely and hunt only moving prey — baby brine shrimp, daphnia, grindal worms and similar live or frozen foods. That fact must be on the tank's instruction sheet at the new house in plain words, because a sitter who sprinkles flake food will report that the fish was fed while the badis ate nothing. Update the sheet with what your fish actually eats, how often, and where the frozen food is stored in the new kitchen; then check that the deliveries of that food, or your supply source for it, carry your new address, since a specialist feeder's supply chain is far easier to break in a move than a flake-fed fish's.
Record the new water and the new territories
Test the new home's tap water for pH and hardness and add the results to the badis's notes. Scarlet badis come from slow, plant-choked shallows and prefer soft, slightly acidic to neutral water, so a harder new supply is worth documenting before the fish's colour dulls and you are left guessing why. Note the territory map too: a move usually means the tank is replanted and rescaped, which dissolves the old boundaries. Write down how many males you have, where each has settled since the move, and whether dense plant clumps or small caves break their sight lines, because persistent chasing after a rescape is a layout problem, and a written before-and-after makes that obvious.
Refresh contacts, shop registration and emergency details
Give your fish shop the new address and phone number, and register with a nearer shop if the move demands it — for a fish this specialised, knowing which local shop stocks suitable live food is a record worth writing down. The emergency sheet needs the new key holder and the new address, plus a note that a scarlet badis may hide motionless in plants when stressed and should be looked for at feeding time rather than assumed lost. Include the filter and heater socket details for the new room, since nano tanks are often moved onto different circuits and furniture layouts than they had before.
Note individuals, not just the species
While the tank is drained for the move, update your description of each fish: the dominant male's depth of red, any female's plainer colouring, and distinguishing marks. Scarlet badis are commonly sold as mostly males, so an accurate written count of sexes prevents a future misunderstanding if you add fish or pass the tank on to someone else, and it gives a vet or experienced shop the full picture if one fish stops eating.
All of that — feeding specifics, water readings, territory notes and individual descriptions — fits the purpose of KinsLe's Pet Passport, which keeps a scarlet badis's records together in one packet instead of scattered across shop accounts and memory.