While haplotype‐specific genetic load shapes the evolutionary trajectory of natural and captive populations, mixed‐haplotype assembly and genotyping hindered its characterization in diploids. Herein, we produced two phased genome assemblies of the critically endangered fish Chinese Bahaba ( Bahaba taipingensis , Sciaenidae, Teleostei) and resequenced 20 whole genomes to quantify population genetic load at a haplotype level. We...