I suppose, there aren't any.

The name Mills_and_1000G_gold_standard.indels.hg19.sites.vcf suggests that the data is based on the 1000 Genomes project, and I presume that the Channel catfish has not been sequenced as comprehensively. At least Ensembl has no Variant database for that organism. Maybe there is a specialized database somewhere, but I fear that you will have to do recalibration based on your own sequencing data.

You can do this e.g. with BBTools approximately like so:

Quality score recalibration (be sure to trim adapters first):
bbmap.sh ref=ref.fa in=reads.fq out=mapped.sam
callvariants.sh in=mapped.sam out=initial.vcf ref=ref.fa ploidy=X
calctruequality.sh in=mapped.sam
bbduk.sh in=mapped.sam out=recal.sam recalibrate
callvariants.sh in= recal.sam out=final.vcf ref=ref.fa ploidy=X

After unpacking BBTools, you will find more info in the ./docs/guides folder. Make sure that you choose the correct ploidy, since some fishes are polyploid and this catfish species even seems to have a variable ploidy. Ideally, the ploidy exactly from the investigated specimen should be determined, if there are still tissue samples left in the freezer.

If in doubt, I would search the literature for variant calling in fishes. At least for Danio rerio and economically important fishes like salmon, there should be variant data out there - as far as I know also the Atlantic Salmon has a variable ploidy, therefore is probably a suitable template organism.