We know that fishing not only wises up the fish that have been caught, but also their progeny -- even though the DNA remains the same. This article focuses on cichlids, such as tilapia, but the model for adaptive change seems pretty universal among animals. Note that adaptation does not change basic body plan, which seems immutable, but does seem well designed to respond to environmental triggers.

Last edited by anthropic; 10/14/21 09:57 PM.
7ac 2015 CNBG RES FHM 2016 TP FLMB 2017 NLMB GSH L 2018 TP & 70 HSB PK 2019 TP RBT 2020 TFS TP 25 HSB 250 F1,L,RBT -206 2021 TFS TP GSH L,-312 2022 GSH TP CR TFS RBT -234, 2023 BG TP TFS NLMB, -160