I have downloaded read sequences using fastq-dump with split file option and SRR id for paired sequences. But splitted files have different number of sequence reads. As per my understanding, since these are paired-end reads these should have equal number of sequences.
$fastq-dump -I --split-files SRR390728
$grep -c '>' SRR7716545_1.fastq
$grep -c '>' SRR7716545_2.fastq
Please correct me if I am wrong.