The group count written on moving day
A corydoras catfish move should update the usual records, the veterinarian, the aquatic shop, sitter arrangements, and food deliveries, at the new address, but its most valuable entry is a simple count. Corydoras live as a shoal, and several species look alike at a glance, so write down how many of each type were released into the reset tank and note any fish that travelled poorly. That figure is the baseline for every later welfare check, because a group quietly shrinking by one fish at a time is otherwise easy to miss in a busy community tank. Photograph the shoal settled together and file the picture with the count.
Substrate and barbel notes for the rebuilt tank
A corydoras catfish reads its world through sensitive barbels, so the paperwork should record what now covers the tank floor. State the substrate type in the new setup, whether it changed during the move, and where the open patch the shoal prefers for feeding and resting sits in the rebuilt layout. Note the smooth stones, leaf litter, or cave edges the group gathers around, because a sitter scanning for the fish should look in those resting places first. If any cory showed worn barbels after the move, write that observation into the record with the substrate note beside it, since the two facts belong together for the vet or shop to judge later.
Water readings and the bottom-feeding record
A corydoras group moving to a new supply should have the new tap water's hardness and pH recorded beside the old address values once the tank settles, labelled by house. The feeding record deserves rewriting at the same time, because bottom fish are the easiest to underfeed from an old sheet: name the sinking wafers and small live or frozen foods used, the evening timing, and the spot where food is dropped so it reaches the floor past faster tankmates. Add the filter and water-change rhythm settled into at the new address, since corydoras grazing a mulm-rich floor are quick to show when maintenance slips.
Resting places and the shoal's daily rhythm
A corydoras catfish file should describe the shoal's ordinary day so a stranger can recognise it. Write where the group rests together during quiet hours, which corner they sift through at feeding time, and how they behave after a water change, when many corydoras celebrate with a burst of glass-surfing activity. Note the normal breathing pace at rest as you observe it, in words rather than numbers, because rapid gill movement in a resting cory is a sign worth reporting. That rhythm record turns a sitter's vague worry into a comparison the paperwork can actually settle.
New contacts and access details
A corydoras catfish file at a new address should name the nearby shop that stocks the group's foods and understands shoaling fish, refreshed keyholders, and a backup close enough to matter. Add the practical room notes, sockets, fuse, the water-change tap, and where the siphon and buckets live now, plus the spot where the spare net is kept, because catching one cory from a shoal in an emergency takes a calm hand and the right net. File the transport account, including the container the group travelled in and how soon they resumed shoaling after release. Keeping those details in KinsLe's Pet Passport makes the corydoras paperwork as group-minded as the fish themselves.