Convict chichlid, Amatitlania nigrofasciata
Turns out altruism is for the fish — Osaka City University
Christian fundamentalists will confidently assure you that their religion gives them superior morals to Atheists and members of other religions because they get their morals direct from a perfect god who defines right and wrong. Almost invariably, of course, the same fundamentalists who need to boast about their supposed superior morals are using religion for the excuses it gives them for otherwise unacceptable, antisocial attitudes and behaviour like homophobia, misogyny and/or racism, but that's another issue.
One of the claims they will make against Atheists, for example, is that Atheists see no reason not to be selfish, whereas Christian fundamentalist are altruistic because they know this is the right thing to do, not because it is inherently right but because their god tells them to be and promises them a reward for altruism or punishment for selfishness.
However, evolution by natural selection, operating at the level of genes is fully capable of explaining altruism as an evolved behavioural trait because self-sacrifice can often ensure the survival of those descendants and close kin who are carrying copies of the genes for altruistic behaviour, so ensuring the survival, even at the expense of individual carriers, of those genes through time.
So, this gene-centred evolution
should predict altruism in other species; species moreover which don not need to read the Bible to know right from wrong because they have an innate, inherited, set of pro-social behaviours which are also situational - the situation depending on the probability of helping the survival through time of the genes for that behaviour.
This is the finding of a group of researchers from Osaka City University, Japan, whose results were published open access in Nature Communications a few days ago. They have shown that male convict cichlid fish,
Amatitlania nigrofasciata can vary their behaviour between pro-social and anti-social depending on the situation.
The Osaka City University new release explains: