Characterisation and expression of β1-, β2- and β3-adrenergic receptors in the fathead minnow (Pimephales promelas)

► β1-, β2- and β3-adrenergic receptors in fathead minnow are characterised. ► The molecular signatures required for ligand binding are present in all receptors. ► He β1 receptor is predominant in heart and brain, β2 in liver and β3 in ovary. ► Chronic propranolol exposure alters receptor expression.